I also thought it reminded me of an aerial view of a complex of buildings in a green landscape. Today I decided I just wanted to clean up the edges, overlaying lighter or darker colors to please myself. I drew the few lines to support the idea of structures, and to draw the eye toward that left yellowish block. I'm trying to remember to only put detail around the intended center of interest.
At last—an abstract sketch! From color blobs! With a design I like, which was my goal.