If you have a small swivel vice, it will be very helpful. Take a block of wood and paper and glue or double sided tape a piece of bone to it. Your practise piece. Put it in the vice, you can them get some turn with the vice so you can move the piece and hold you tool somewhat steady. Wax the bone, scratch your design and letters, ink, sand off the excess, wax and repeat. The wax part is important to do first. It will keep the ink from staining the bone. People who do it well can whip out amazing designs in no time, and like everything else it is all about practice. I think you will be able to do this without too many hiccups. If you have a magnifying visor, they are priceless.