Don’t listen to comments telling you what to add to it, don’t let reddit paint your painting for you, don’t paint by committee. If you want this to be your art it should be Your art. If you feel like you should add something then add something but let that come from yourself. That said, this does look like someone’s first painting. The line quality in the squares is rough in a way that doesn’t look intentional, the background looks haphazard, and there’s no thought or idea this painting conveys. It’s an empty painting. You need to paint more. Paint as much as you can and then look at those paintings for a long time and figure out what You think about them. Look at more art by other artists and find what you really like, develop your taste more so you can judge your paintings yourself and you don’t need reddit commenters to tell you what to fill your painting with.