Very pretty quilt, love the colors! My DH would kill me if I ever "misused" a pool table like that LOL! I think a basic, continuous line pattern for each square is a great idea. If you check out some of the online sites that sell the stencils, you will find the same pattern in different sizes, allowing you to fit the stencil to your area. There are several different methods of marking the pattern onto your quilt. FMQ on a domestic machine isn't easy if the quilt is large....I am working on a 112x112 and it's a bear sometimes, but am almost done.