Nothing like practice, practice, practice to get better at FMQ'ing!
But three things come to mind that will help anyone doing FMQ. First, breathe. I know it sounds silly and simple, but we tend to hold our breath (without even realizing it) when concentrating. So remember to breathe and it will help relax you and allow your work to be smoother and flow better. And second, don't practice for too long in any one session. Several short (10-15 minutes) sessions a day are better than one long drawn out session.
And third, don't forget to have fun! Quilting should be fun, but we often turn it into a chore when we are learning or concentrating too hard.