Hey, I'm not much of an expert so I don't think I can truly critque it. So I will mainly say where I stand from a purely listeners point of view, and I will keep it short
1st movt: Loved the begining, very grand. Few dissonances that I personally didnt like...but that's purely a preference thing. It was all clearly well thoughout.
2nd movt: Bascially if you can keep me interested during the slow movements, then it's a good piece
This one did that, the begining very graceful almost serene. Then with that thundering section about halfway through, simply wonderful.
3rd movt: A joy to listen to. Same as with the 1st movt...a few dissonances (but that's my opinion). Also loved the sudden ending.
Sorry I'm not really much help from a critical point of view. But I just thought I'd tell you I loved it!
Although there were those few moments with the dissonances, that is purely personal and all else I can add is: Hurry up and finish the remaining movements!!!

Then you will have to get a performance of it
Can't wait to hear the rest
Lex