Bear
I think the blocks are blending in with the floral. Maybe you could add a small white border to each block to seperate the floral from the blocks. You need to stop the eye between the blocks and sashing. When you have the same color in any amt in both sashing and block they will appear to bleed from one to the other.
I don't think changing the white is the problem at all. I like the white. Tho you know me I would have used a small tiny print in place of the white. LOL