I've only worked with a Jelly Roll one time. I just unrolled it and started attaching the strips. I just bought a Christmas Moda fabric one to make a bed runner for the holidays. I decided to separate them and alternate colors and shading. How do you decide to use the strips? I just hope, it looks balanced when I'm done. Do they roll them a certain way so that they will look balanced when you sew from the top of the pile of strips to the bottom?