I wish I had an orientation point on this...I can't tell how large or small this is...your colors are good...and your focus good...but I can't tell about the macro side of this...
The 4 contrasting colours are greatly enhanced by the rough wall textures which highlight the paint strokes. This is simple and abstract, and also quite pleasant to view.
With such a strong geometric pattern, I think the horizontal and vertical lines need to be absolutely horizontal and vertical. Otherwise, this is a really nice capture.