Make at least three slices in the cloth on each pocket. The middle pockets will usually need four. Be sure not to cut less than 1/2" from the edge of the slate. You don't want to cut the cloth too close to the actual playing surface. It is also a good idea to use a 1 1/2" strip of cloth to line the inside pocket. This will help the table look better because the slate and wood will be completely covered.