I am in no position to give "critique" as requested but it is a beautiful piece, your composition is good, the colors work. I love it!
I really love the triangular textures and colors in the background
i love the round thingy... looks like a sun
haha that's exactly what I've tried to add and succed by linking a simple bubble/pre_blur with the crackles points
So no other bubbles on the main shapes
But it have those points inside
I'm glad you like it!