Very good for what it is - a loop. The colors you chose are bright, vivid and appealing and the art style looks very clean. Judging from this small piece of animation here, I'm sure if you were to do an animation of full length, it'd be gorgeous.
The music also suits the type of submission this is. One suggestion, though - since people of NG don't necessarily enjoy loops like this, how about making several of loops like this and compiling them together? That'd be something interesting to see.
3.5/5. Good luck on any of your future endeavors.