Hi, I'm not familiar with your work, but this Halloween Quilt really is exciting. I'm thinking, "OH! I would like to make one of these one day... but a little different..."
I would re-align the squares, organizing a bit by the colors of the FRAMES, and then make Diagontal stripes of the green-framed squares, from (upper left) corner to (lower right) corner, then the black frames, the purple frames, etc. It would give a bit more structured look.