Definitely agree on a price before ever picking up your scissors! Get everything in writing and no less than 50% paid in advance (nonrefundable). And most importantly....do not give the quilt until entirely paid for. Don't sell yourself short on time either, if you think cutting the fabric will take one hour, charge for two because you will find issues in dealing with fabric already sewn into garments (all the garments will have to be washed, dried, pressed and starched.