Cool man!
Nice to hear people just put themselves out there by stretching & try new stuff.
One thing that I would say, is even with a semi-free form piece like this, it will always help to keep a sense of rhythm to propel the piece along...that along with building & expanding on themes. Even the simplest of themes will giv the listener something to latch onto & then you can build off of it.

Keep on playing bro...no such thing as a bad experiment...unless ya burn your house down, or something. LOL
No such thing as a bad "Musical" experiment I should say. LOL