Wow, I'm really glad to have discovered your music! I especially liked the Etude No. 5. I do have to ask, though, (and maybe I am just unenlightened,) whether the effect you wanted in measure 17 of the Etude No. 5 could be better expressed with fewer quintuplet brackets. Overall, your music is splendid and I will keep listening.
Having good ideas, the main issue is that the music runs in parallel all the time: melody (doubled or not) and rhythm. For a while it's nice, but on the long term it's not very idiomatic for the piano.