A few questions to ask yuorself:
What system are yuo going to use?
How do determine a real move from fake?
How do yuo plan to size yuor positons relative to yuor account size?
Do yuo underestand leverage - in Forex it can be 200:1 or more, do yuo know how this works?
How will yuo decide when to exit profitable or losing positions?
This is just the beginning. I was a futures floor trader for years in a past life, and can tell yuo it always looks much easier than it really is!