The method I use came from a taxidermist my wife talked to.It is as follows, wash the skin in water and dishwashing liquid like Dawn, and hang to dry a bit. When thoroughly dry, stretch out and pin down on some cardboard. Apply the following mixture liberally, 1/3 Denatured Alcohol,1/3 Acetone, and 1/3 Glycerin. When dry repeat on the other side. Hang to dry , then apply baby powder and rollup and place in a ziplock bag for storage.So far this has worked for me, but I am open to better methods.Dave