anyone tan their own hides? right now I have three beavers, a coyote, 2 coons and a opossum. gonna make my son a hat outta the coons and coyote found templates online. Make 2 decorative hoops with the beavers hopefully catch another beaver and make two pillows and just tan the opposum for my son to have. I was wondering if anyone has any tips or secrets to tanning these.