Depends on the origin. Good prime northern pelts are going to bring more than those down south.
On the yotes, case skin them and leave the feet intact, turn the ears and split the lips......they'll bring more.
Beaver are a pain to skin and flesh because of the fat. The skin has to be cut away from the carcass. You'll need someone of experience to show you how. It's actually pretty simple, but time consuming. Any bullet holes should be sewn up with waxed dental floss before you put the fur on a stretcher.
predatormasters.com also has a trapping and fur handling subforum with info on fur handling.