Ditto to what LGJARN52 said. Find a single 12" or 14" block you like and that you can assemble easily and add sashing and you will have a good start. If the site has a size requirement you may need to make 12 or more blocks. I made two quilts this spring for a hospice center and they wanted quilts that were longer and more narrow because they would be used on hospital style beds and did not want additional over hang on the sides. So.... I made my center and added HST rows and coordinating strips to the top and bottom and Ta-Da. Done!