I'll risk the wrath of the masters by involving myself in another Kata discussion --
My experiance with forms competition is this (I assume we're discussing traditional not contemporary forms) is that the judges play a big part in who wins, and they are all looking for something different -
Some Key areas to focus on: Intensity - the more intensity the better. Strong stances and strong techniques. Visualization and focus (this will also help with intensity).
Never stop or pause during the form - if you miss a step or technique move on, be confident - the judges may not know the form your doing, but they will recognize strong stances, techniques, etc....
The biggest factor of course is repetition - both in and out of competition - the more you do it the better - keep at it and you'll find yourself winning.
Also, watch your competitors, see who's winning - try to draw from what there doing.
Good luck ............
