This piece is simple, bright, and very intricate with its design. It almost looks like it could be a sea creature of its own! The background helps make the shape in the middle almost move. Overall, the piece is edgy with a hint of softness.
The one thing I would say to fix would be the shape in the middle. What would make this picture even better is if you rotated it to the right several degrees so that it better fits with the symmetrical theme you have going on here. Maybe even move the thing to the right to completely cover up the center of where the background design meets.