I can only echo what has been said so far.

My first Masters contest, I sort of flopped a stall turn (more rolling than flopping) and did a half roll down when I was already oriented correctly, making me fly the next few maneuvers in reverse. The only place I could sneak in a correction was on a K5 maneuver- a Figure M. I did a 1 1/4 roll up instead of a 3/4 roll up on the first upline. Nobody caught it, as I didn't give them a chance to. I ended up winning the round, and winning the contest, all because I didn't let it get to me.

Practice and patience, these are virtues in the world of pattern. Good luck, I hope you enjoy it as much as I do!