It fits the artwork very well! The chords and instrumentation effectively capture the nostalgia intrinsic to the art. The repetitive, continuous nature of the piano line brilliantly reflects the art's looping animations.
Some areas to improve:
1. It seems like you attempted to have a climax at 4:10, but it didn't hit the mark for me. There are two main reasons, as far as I can tell. First, the composition isn't very dynamic due to heavy compression and a lack of dynamic automation on the instruments, which diminishes the impact of adding voices. Second, there aren't enough substantive changes to make the listener feel a sense of movement on a musical journey. The final section feels the same as the first section but with additional voices and an echoing countermelody.
2. As mentioned, I think the level of compression diminishes the emotional appeal of your lovely composition.
3. Depending on the sample libraries you're using, you can improve the realism by automating volume and dynamic level.
There is more I can say, but I just want to focus on my primary thoughts.
Good luck with AIM!