In terms of style, this very much fits the Peter whose music I know! I enjoyed the counterpoint, the unconventional harmonies, and the way each movement fit the mood you were (assumingly) going for. Nice job!
I have to echo Luis and Jacob, though; the texture is dense and does not vary enough from movement to movement. This appears to be a characteristic of your music in general, so I'm not sure that it's something you care to address. Nothing wrong with that, of course! I just wonder how your music would sound if you gave it spaces of rest. In this work, for example, you do give instrument groups a rest from time to time, but the music never, ever stops except between movements. The percussion instruments in particular are relentless once they get started.
The score is a bit problematic but I recognize this is an issue with MuseScore and not your skills as an engraver. Jacob made some great pointers which I won't reiterate here.
Overall, an enjoyable piece. I'm glad you took the time to post this! Keep up the good work!