Sitting here going through the lessons learned today. One thing I've noticed during executions is that it helps to 1) identify where you WANT to get executed and setup the draft order with your finger on the trigger and 2) WATCH LEVEL 2 to see when your preferred order size becomes available under the Ask so that you can submit your order for the easy execution. Like, if I want 10,000 shares, I can wait until Level 2 hits my buy area and a seller for 12,500 shares pops up. Ideally you can submit your order and let it get filled in time, but if a seller pops up with all of your proposed position, it's likely (at least in my experience) that it'll get filled in a half-second. We'll see how ETrade handles it when I start using real funds.