Well, I think that most watercolour classicists would say that your skin tones go too dark,
They might also say that the colours in the triangles over the background rather than the figure are too bright, but they'd be wrong there. At least if the triangles are supposed to be shards of spacetime.
Whatever the triangles are, they're abstract rather than representational, yes? The classical rules of muted tones in watercolour really only apply to representational art IMO. So you can't be "too bright" in abstract elements because the classical rules don't apply.
I like the picture in and of itself; I'm trying to give you a sense of what's actually right and wrong about the colouring IMO.