Pseudopianist, I listened to your longest piece(also to the other but they were a bit short to really give comments on them).
Some interesting stuff in there. Sounds pretty much like Tonicization in Db major.
All the really interesting things happen in the melody, the left hand arps are really just there to support it harmonicly. Because of this the melody isn't always pleasing. A few times some sections end being unresolved.
Also, one thing I noticed, the augmented sounding part, you finish it on a Db triad. I don't know why but I find that using a triad chord in a more colourful harmonic context sounds really harsh. I always add a sixth to those chords. Sounds much better. Its at 1:22. In the midi the left hand is really quiet so you can't really hear it. But in Finale it sounded that way(it also messed up some note durations, importing midi's really isn't a good way).
Personally, I prefer to use diatonic melodies with non-diatonic chords(of course altering the non-diatonic chord notes in the melody over that chord).
I don't know if its normal for minuets to have such short A sections, but I think they were too short. But I also thing some Chopin preludes are too short.

So all in all it sounded pretty good, but I got the impression it could be much better. But I couldn't really put my finger on it. So maybe it is just taste.
No critisism at all, I just thought this topic needed more feedback. Its pretty meaningless without imo.