I have been dying to put my hands on a satin wedding dress to make a quilt. I tried on Craigslist but people try to sell them way too expensive. I plan in my head to make large squares and quilt them whole cloth style after joining them together alternating white with the bridesmaid color. It would not be a quilt to be used but displayed. I am not sure I would want to make it for someone else because is very difficult to please people, and you can not predict the reaction when they see their gown cut up.
Feel free to say no if you don't feel comfortable.
I like to make quilts and selling them. This way I do my thing and people either like it or not. I don't like to make a quilt and hope they like it. The few times I had made a quilt on commission I make them buy the fabrics, select the pattern and if possible, select the placement of the colors within the quilt.