would be nice if we all knew the answer to your question! I have entered a fair few competitions, and they are all different........so far, the only one I know which actually gives you a "score card" is the Euro Teddy, here in Germany. They give points for all sorts of categories covering workmanship - down to fine details , like if you have used a sewing thread which matches the fur colour, whether you have stuffed the limbs equally etc.........and then go on to the "look" of the bear - and if they don't like your style - tough!
Basically - you make the BEST bear you can, and then cross your fingers......it is NOT an exact science!
The thing to keep in mind is that you will never know unless you DO enter..........and good luck!