To get the white fabric to lie flat, it needs to be trimmed *very* close to the seam in the area near the mountain summit. In Barb's video link, around 3:45 the video shows how it bunches without trimming and then shows how to trim it. For a quilt, I would not want to have the material trimmed so close to the seam. I think Jennifer23's suggestion to consider using smaller pieces of the cream is a good one - it would make it possible to get seams that lie flat without trimming.