I've been playing under the understanding that you can't do more than one of any type of action. For instance, if I were playing Vader, I could barrel-roll and get a target lock, but I can't barrel roll twice.

Am I doing it right?

That's correct. Page 9, left column, very bottom.

Thanks for the confirm! I scanned the book twice but didn't notice that . . . But I had a feeling I had read that somewhere.