Thanks for the advice!
m1469,
Sure I'm sincerely yours, that's what I said right?

I have been trying to observe different details about the position of my hand,
but I dont think I have really found a big difference, but I agree with you that analyzing yourself is very important. On the other hand sometimes people give you the advice "dont think too much", which can also be sensible. I think that when I think of it as a problem it becomes a problem. Sometimes I walk to the piano and I know I will not have a problem.
Pianowolfi, Opus10no2, I have also noted that just playing infront of people helps...
And also, playing a concert you feel you are not ready for is really disastrous. The nerves won't get you any more ready to play, and I think its better to give concerts that you actaully can do, so your subconcious think concerts are not so bad afterall.
Pianistissimo, I have given the flatness/curvature of the hand an extreme amount of thought. When I was younger I thought that my fingers were impossible to play with because of their hyperflexibility of the last joint. "they bend the wrong way". But I have noticed lots of pianists having this (cziffra, bolet, many others). Some play with extremely flat fingers, some with very bent fingers (pollini). And of course some pieces (chopin 10.4) require quick alteration between both forms. I think anything works as long as it feels right. But I do agree that in general its not good to play on the very tips of the fingers, but rather on the "cushions"...
Another think that helped me with my playing is that I have been teaching mathematics for a class of about 20 students for a year... I was quite nervous in the beginning... now its just "going to work".
As for repertoire I do love to play romantic and modern music (not that there's anything wrong with bach, mozart). I have concidered playing Suite Bergamesque, and I'm sure its challenging and extremely beautiful, but I'm not sure its as difficult as romeo and juliet. If I were to play debussy, I might try preludes book 1, but I know there are some terrible things in there

Actually how difficult are these?
Cheers