I think I agree with Mosquitosewgirl; try switching your materials. If you sew them together like this, without sashing, you'll end up with large 4-squares of dark material at each corner and the light material in the middle may get overlooked. I personally like block #3 best without the stripes. Try cutting out one block with your floral in the squares and the darker in the center triangles. My eyes are drawn right to the dark squares, and I'm not sure if that's the effect you want; I'm not familiar with this quilt either, so it's hard to judge from a single patch.