I like to make my large trees with a background fabric all fused and cutout first. Then I can place the smaller pieces of bark on top of the background using it as the shading and outlining of each piece. I have pinned it on to the quilts background where I like it. I have left the fusible paper on it because I first want to put on leaves and nuts That will be behind the trunk and some of the branches. Only then will I fuse it on and begin the bark. So leaves next.