Carving bone is a cheap fun hobby that takes up a lot of time. After just a few days you may be able to make something impressive. But as I understand it takes many years to master.
Step 1: Tools and Materials You Will Need
A RESPIRATOR, BONE DUST... OR ANY FINE DUST FOR THAT MATTER IS VERY BAD FOR YOUR LUNGS ABSOLUTELY DO NOT START THIS PROJECT UNLESS YOU HAVE A WAY TO KEEP YOURSELF AWAY FROM THE DUST.
(YOU WILL ALSO NEED A STRONG STOMACH IF YOU USE A CARBON FILTER RESPIRATOR. BONE CAN MAKE VERY DISGUSTING SMELLS)
And a dremel with a diamond bit, a drill bit, and sanding bits with sand paper .
To make better designs you will also need:
Sand paper 300, (600, 1000 are optional. I don't have any and will explain what to do if you don't have any either)
A jewelers saw with the coarsest blade you can find
1 needle files (The one is the coarseness of the file)
a tooth brush
and a Linen towel