I finished these the other day. They are about 16.5″ square and are made of two pieces of fabric. The gradation fabric is the same on all of them and folds over to the print side to make a little hem. I saw something similar to this done on a Sewing With Nancy show a while back and made them as best as I can remember.
I am still planning the oven mits. I saw an old Simply Quilts on Seminole piecing and am thinking of making a Seminole stripped piece to go across the back of the mits. That might be fun, but I need to plan it out some before I try it.