Watching the experienced guys definitely helps a lot. It's easy to zone-out when other people are shooting, but you can get a lot out of it if you actually observe what they're doing and how.
I try to watch as many as possible, and repeat the order of key points in my head, so that when it comes time to shoot, you know you're plan inside and out.
As a beginner, I really want to eliminate choice from my run. Any time that I have to decide "should I do this now? Or that?" I slow down. If I know what is supposed to come next, that helps me a lot.