Fear

This is my first time I completely write a experimental piano. It's not beautiful, hard to listen but when play it, I shivering, i  think i can see some soul around me. i cant explain this feeling.
Thank you for listening

It sound nice, beautiful to muy ears. Some transiciones are abrupt, as the change from harmony by fourths to harmony by secondY y ńin mensure 8.

I thanks the clusters jumping octave up and down in the last bars sre impossible. Hace you played it yourself?

m.5 - probably shouldn't have a second note equal in register to the right hand in the left.
Make sure your enharmonics are consistent throughout a passage.
mm. 31-32 - writing this in 7/16 seems a little pointless to me. You can just do it in the next measure.
Also, if you want clusters, you should just write that in instead of this weird pseudo-cluster that the performer has to interpret.
The feeling is derived from a constant juxtaposition of tritones and minor seconds/chromatics, along with a sense of build to total atonality. It's your music... learning how what you write impacts you is probably important.

This is clearly a virtual representation of the piece, but why is the piano so out of tune? What software is this?

I imagine on a real piano this piece is quite lovely to listen to. You say you shiver when you play it; do you have a recording of yourself playing it on an acoustic instrument?