I make a lot of quilts for other people and give them the choice: (1) tell me your colors, and I will pick the fabrics. (2) Lets go shopping together and select the fabrics. (3) You go purchase your own fabrics. I also have a book of blocks that I give them to look at. I have selected a few blocks that they might like to choose from, and have the yardages already calculated ahead of time. I think different people will select different choices. I have done some each way, with considerable success.