That looks exactly like the one I am working on - got my pattern from the "Big Book of Scrap Quilts" ... but I didn't separate my values - I do have 3 main colors in my squares, yellow, pink and green to make it look like a flower in the center and the green is on 4 of the outside corners. I just cut my strips and just picked out one at a time... I really like the way your's is turning out... Hope mine comes out as good as yours.