I always use cotot batting on baby quilts I never thought to shrink them though I do wash them before I wrap them. I've only done two in the past. One is crib size and the other was about 40x40 ish. I have pictures I'll put on here. One of these I had mickey mouse fabric in flannel so I used colored square and white squares with the mickey mouse image in yellow flannel. The other I had blue fabric with crayons and letters on it which is the one I made crib size.