I reduced a piece i wrote for 4 voices onto a piano, but, as i am not really a piano player myself, I think I need help making sure it's actually possible to play.
I believe it is in fact possible, being a mediocre pianist myself.
I've attached a "polished up" version:
it looks much better, thank you
Most definitely possible. You might want to add Title/Composer/Copyright information through Ctrl-i.
I think you should submit this to the scriptorium, along with the original.
If the original is for SATB, you should add this to the SATB score.