Awesome!
There are really nice ideas in here, and the piece sounds very complete.
Perhaps it would be better named as "fantasia".
The notation is a bit of a mess, but it just needs some work done, nothing serious. I don't see why you changed the key signature right at the end. Also the time signature changes sometimes don't make much sense. For example in M.40: you have 5/4 and then 3/4, while the last bar in M.40 could easly be placed in M.41. Why not keep both 4/4?
Anyways, if played nicely think it would sound very entertaining. I love this kind of bubbly, dreamy textures you have going on here.