ok so here is my deal...i have had a quilt in the works for awhile now ...but today i started cutting more for it. it is going to be a denim quilt. so my problem is i have been cutting old jeans i have saved for ten years now but the stuff i cut today was purchased from joanns and i forgot to wash it before i cut my pieces...i cut ALOT of pieces today and don't want to have to save it for a completely different quilt. so how much is it going to shrink when i wash it and should i use it and hope for the best or wait and put it into a different quilt and let it all shrink at the same time?