I love this! I think it's incredibly beautiful. Where'd you submit this? And what's the piece/subtitle about?
I noticed a few things about your notation that I have questions about (and I too use musescore so I understand the struggle it is sometimes lol):
Your rests in the non-playing staff are inconsistent -- for example, in measures 1 through 3, each rest is marked differently. It might be better to be consistent and change every rest to quarter note values.
The main issue I had reading through your score, however, was in passages such as measure 4, where there are constant sixteenth notes exchanged through the hands. A possible solution is to just make the rests invisible to stress that the passage passes throughout the two hands, as Eric Sammut does throughout his 4 Rotations for Marimba (Performance of Rotation II: https://youtu.be/8hAGcUKHFuI?t=18; Sample of score: http://www.lonestarpercussion.com/Sheet-Music-Books/Marimba-Solos/Keyboard-Percussion-Publications-KPP-SAMM-FR2-Four-Rotations-for-Marimba-II.html -- pages 1 and 2 are available in images). (To do this in musescore, select all applicable rests you have and press [v] to make them invisible.)
Also, I think it would be easier to read if, at spots such as 25, the rhythm starting at beat 2 were written "eighth, sixteenth, sixteenth-sixteenth, eighth, sixteenth" (see a similar example in marimba 1 part of Steve Reich: Mallet Quartet).
Other than that, beautiful piece. Subscribed, and I'm gonna go listen to it again.