To cast spells, you'll need to do certain actions. For instance, to cast a mask spell you need to eat mushrooms (they grow on certain trees), or to cast antler spells you need to eat pine cones (rub up against trees till one drops a pine cone). For pelt spells, you need to rest beside a sleeping deer for about a minute. Oh, and you can only cast spells on others, so to get yourself a new look, you need to ask them to spell you. Hope that helps!

You are very welcome. I should also note that fawns can't hold spells as long as older deer, they will vanish after a few minutes. However, once you grow up they last forever.