I am doubting my skills again

I am soooooo frustrated. Right now I am doubting my skills so much that I am thinking my former first-places have been pure luck. I have been doing some practicing today and the nails came out... awful... It's embarrassing and frustrating to see how inconsistent my work is as it usually is very consistent. Usually, at competitions, I am used to use tips. This is the first time I will be using forms and I just don't understand how I can be as consistent with forms as with tips.
I guess I have to practice more, the only problem is that it's only 2 weeks left until I am on *that* flight to Orlando. :-/ I don't feel ready at all.... ARGH...