I used a solid cotton for sashing some blocks. Before I cut it, I ironed it, sprayed it with water, and ironed some more. After sashing each block, I sprayed and ironed it again before declaring the block finished. Now the top is all put together and I have again ironed and sprayed and ironed. There are still wrinkles. If I quilt over the wrinkles will they go away? How do you get rid of them?