Decide what you want to make. Napkins and placemats? Then decide which fabric you want to start with. Say the pumpkin fabric. Cut a little corner off or scan a page of the fabric. Take this to the store and try to find at least 2 fabrics to go with it. Say a background tan or cream or whatever you think looks good. Then pick another fabric that you think looks good. You might even find several. You can't match up all your fabrics at once but eventually using this system you'll use them all. I have found that when I buy a fabric I try to get at least 1 if not 2 that will go with it.

If you decide to make placemats, you could make them reversible with fall on one side and christmas on the other.

I never thought about that. It would cut the number of sets I would need to make for different holidays in half.