I think that there are too many polka dots. I don't like the black at all. A darker green would be nice. The purples have enough variation, the greens need more variation. The purple polka dot and the one below it are too close in value. I would remove one. Also, maybe a combo fabric w/both the purple and green in it. If you look at my log cabin, I used the combo fabric as the center of the log cabin block and the last border. In the bargello, the border fabric ties them together. JMHO.
Thank you for your comments on my quilts.