I made this for my mother-in-law for her birthday. (Shhh! all you family members who are online.) I was a little hesitant to try a circular tablecloth because I thought it might to too tricky to execute. In the end, I designed this, a reversible tablecloth made from home decor cotton/poly fabric. My father-in-law gave me the diameter of the table. I wanted the tablecloth to have some overhang. I used a little geometry and rigged a compass-like device with a thumbtack and tape measure to trim the round shape.
This is the side for everyday use.
This is the side for the Christmas holidays.
Here is a detail shot of the Christmas side. Having the right color thread is crucial for good top-stitching.