Hm. Guess I can have a go at this..It'll be more of a how you can improve each replay:
1. I rather like this replay. Not too much I see wrong with it, just needs a bit more relax, and you don't need to relax everything at the end. Just pose and leave it.
2 So far your best replay(I started from bottom to top) Could use a bit more relax to make it flow a bit more, moves were a little rigid. Again at the end, you just relaxed all, usually poses look a lot better then relaxing-all
3. I liked this replay, didn't see much wrong with it except that you didn't do anything with the end, you just kind of landed like you relaxed all.
4. I think that your moves are very "not relaxed" (sorry i don't remember the word =p) Not too much happens, the replay has some nice potential, but not enough relax. No real 'boom-hits' either, try to add one or 2.
5. I think that everything before the flip is alright. The kick had a nice start, but right after the decap you relaxed the leg, which made it look(to me) like the kick had absolutely no power. Then after it looks like you just kinda lost all momentum and just kinda landed.