Aster 103: Your First Trade

// Five steps from "I've never opened a perp" to "I've opened, watched, and closed one." Real money. Small size. Real consequences. The graduation exam for the survival kit.

The wasteland respects effort. Aster 101 taught you what perpetual contracts are. Aster 102 taught you to read the trading screen. Aster 103 is when you stop reading and start trading.

This article walks you through one full transaction — open, hold, close — with annotated screenshots of every dialog along the way. Five steps. By the end you'll have a closed position in your history and a clearer head than 95% of people who tried this without reading first.

A few rules before we start:

• Use real money, but small money. Twenty bucks. Fifty if you must. Enough that a profitable close feels like a win and a loss teaches a real lesson without breaking anything.
• Use BTC or ETH only for your first trade. Deepest liquidity, tightest spreads, most predictable behavior. No altcoins, no matter how exciting they look right now.
• Pick a calm hour. Don't trade your first perp during a CPI release, an FOMC announcement, or any event with breaking in the headline. A quiet weekday afternoon. Volatility is for later.

Now the five steps.

// Step 1 — Set margin mode

Click the Cross / [n]x / M row at the top of the order panel. The Margin mode modal opens.

Pick Isolated. Confirm.

This setting only applies to BTCUSDT — every contract has its own margin mode independently. The choice you make here is structural: it determines whether one bad trade can drain your whole account or just the slice you committed to this position. For your first trade, the answer is "the slice." Always.

You can flip to Cross later when you're running multiple correlated positions intentionally. For your first trade, that day is not today.

// Step 2 — Set leverage

Tap the leverage indicator next to the margin mode button (it'll show something like 20x by default — Aster sets new accounts there). The Adjust leverage modal opens.

Drag the slider down to 2x. Confirm.

Aster spells the math out for you in their own warning text: higher leverage equals higher liquidation risk. Believe them. From 102's liquidation table:

• 2x leverage → ~50% price drop kills you
• 5x leverage → ~20% price drop kills you
• 20x leverage → ~5% price drop kills you

BTC moves 5% in a single session more often than you think. 2x gives you breathing room to be wrong about timing without being wrong about survival. You'll graduate to 5x once you've done this enough to predict intraday ranges. For now: 2x is the move.

The "Remaining openable notional value" readout will show some absurd number like 480,000,000 USDT. That's the system's max — it has nothing to do with what you can open. Your max is the Avbl number on your order panel, multiplied by your leverage. Ignore the system max and watch your own number.

// Step 3 — Configure your order

Now you're back on the trading screen. The order panel on the right is where you set the actual trade.

Three things to set:

1. Order type — pick Limit. Limit lets you choose your fill price and pay the lower maker fee. Market would fill instantly but at whatever price the book gives you, which can be ugly during low liquidity.

2. Price — set it slightly below the current market for a long (you want to buy lower) or slightly above for a short. Tap BBO to snap to the best bid or offer if you don't want to fight the spread. For your first trade, BBO is fine.

3. Size — drag the slider to about 25% of your available margin. Don't max it. The slider controls position size, which gets multiplied by your leverage to determine your notional exposure. With $20 available at 2x, 25% means about $10 of margin and $20 of notional. That's small. Small is correct.

Now look at the pre-trade preview in the panel: Liq.Price, Margin, Max. The Liq.Price is the most important number on the entire screen — it's the price level where your position dies. Look at it. Memorize it. Compare it to the chart. If the Liq.Price is somewhere a normal candle could reach in the next hour, your trade is too big. Resize down until that's not true.

When the numbers feel sane, click Buy/Long for a long position or Sell/Short for a short. Aster confirms the order. If it was a limit order at BBO, it usually fills within seconds.

// Step 4 — Watch your position

The bottom panel switches to show Positions(1). You have a real, live, on-chain perpetual position.

Five numbers to watch in this row:

• Entry Price — what you paid. This doesn't change.
• Mark Price — the averaged feed that ticks live. This is the number that triggers liquidation, not the chart's last price.
• Margin — what you committed. Stays the same unless you add or remove collateral manually.
• Liq.Price — where the position gets force-closed. If you set up correctly, this should be far from where the market is currently trading.
• PNL (ROE%) — your real-time profit or loss in dollars and percent. Updates every tick.

Now the hardest part: don't touch anything for at least an hour. Your job in step 4 is to watch. Notice how Mark Price moves. Notice how PnL ticks green and red. Notice how the chart can move 0.5% without you reaching liquidation because you sized correctly. Notice your own emotional response to seeing red numbers when nothing is actually wrong.

This watching is the actual lesson. The trade is just a vehicle for it.

// Step 5 — Close the position

When you're ready to exit, click Limit on the right edge of the Positions row. The Close Position modal opens.

Three settings to verify:

1. Type = Limit with the price set to current market or slightly favorable. Use Market only if you need to exit now — like the position is going against you faster than your limit can fill.
2. Amount slider = 100% to close the entire position. You can drag it down to do a partial close, but for your first trade, exit fully.
3. Estimated PnL at the bottom — this is your trade's result. Green if profit, red if loss.

Click Confirm. The position closes at the next fill matching your limit. Your Positions row disappears, your Account balance reflects the new total, and the closed trade appears in Position History for the record.

You just opened and closed a perpetual contract on a decentralized exchange. Welcome to the wasteland.

// What you've earned

You can now:

• Open a perp on any DEX with the same anatomy
• Set margin mode and leverage with intent rather than defaults
• Size a position by Liq.Price rather than by feel
• Watch a live position without panicking
• Close cleanly with Limit when it counts

You cannot make money reliably yet. That requires market structure reading, setup discipline, emotional control under bigger size, and a hundred more trades. But you've cleared the mechanics, which is what 90% of people miss before they blow up an account.

The five rules that survive every trade you'll ever take:

1. Always Isolated until you can articulate why Cross helps a specific strategy
2. Always small for the first 50 trades — size is for later
3. Always know your Liq.Price before submitting
4. Always Reduce-Only on closes
5. Always exit the same day if you're not sure what's happening

Print that list. Tape it to your monitor. Survive long enough and you'll graduate past it.

The survival kit is complete. Volume II is when we talk about funding strategy, basis trades, and how the people who actually make money on these markets do it.

// PART 03 / 03 — SURVIVAL KIT, VOL.I — DEFIWARLORDFORGE.APP

Open an Aster account if you don't have one yet. Use the survival kit. Trade small. Stay alive.