I always pre-shrink my cotton batting. I also do not like the crinkled look. Read the instructions on the package the batting comes in and it will tell you if it can be pre-shrunk. Usually I just put it in the washer and fill it with water and let it soak. DO NOT AGITATE! After about 20 minutes you can drain and spin (gently). Then into the dryer. I use hot water and hot dryer because I want it to shrink as much as possible.