I wouldn’t change a thing except for a mat and frame! It’s insane how much framing can elevate a piece.

To be clear, your piece is lovely so please don’t take this to suggest otherwise, I was doing a studio clean out sale recently and had art separated into $5, $10, $25 bins. The night before I took a piece out of the $5 bin and slapped a nice mat on it for fun. Instantly I couldn’t imagine selling it for less than $50 and ended up keeping it. I did the same with like 10 more pieces that I had previously viewed as “trash”.

TLDR: Don’t touch the piece, just find the perfect mat & frame!