WOW! I can't tell you how much this inspires me! This is excellent. I have been trying to do exactly this sort of thing lately, but it's not working as well for me as it has for you. This is beautiful! A perfectly balanced composition. The abstraction of it is stellar and really moves me.
I don't have advice because it's yours and in your style, not mine. If it were mine, I'd do different things, but wouldn't touch the comp or the color balance, or anything like that. I think the little red squiggles on the light yellow area are your thing, but I would not have them there. ...actually, never mind. I think they make it better because if they weren't there, it would make the piece less thrilling. I am just thinking out loud here. I guess I wasn't sure of them at first, but now I am. That's the beauty of this art though. I wanted to look at it for a long time, so I am looking at it as a viewer and an artist (sometimes these two entities fight with each other), but as a viewer--which was my first knee jerk reaction--I was so taken with this. It really seems perfect to me. I'm jealous!
If you saw the stuff I've been drawing for the last several days you'd see I have been trying to capture similar things. This is so wonderful--GREAT JOB!
Sorry I keep gushing, but these are my feelings.