I am planning on building a curved top jewelry box for my sister's birthday. The part that I need help with is the top. I want to use severl sections of wood cut on the table saw but I am unsure of the angle to cut them at or the width of each section. I want the box to be 8" deep and 12" wide. Has anyone else done a similiar project they can help me out or at least steer me in the right direction?