Thanks for the comments!
@robinjessome: Concerning the notation points:
m97: well ok, as a trombonist usually prefers the bass clef, I should change that indeed ;-)
m132: This is an error, you're right. I had already noticed that but was to lazy to re-upload the score
but I think beat 1 should not be in a bass clef - the f#2 would be too high, wouldn't it?
m151: well, it's in g sharp minor and you need a f## instead of a g - or does the interval on the fourth beat sound like an argumented fifth?
The live performance will follow, I'll play it with a tromboist from school!