BHTGdogs, It takes lots of practice, an lots of stone . Maybe this will help, You need for flakes to run to center or past center so that flakes from other side come to center a rock gets thinner. When I started I couldn,t get flakes to center so as width was reduced the point actually looked to be getting thicker. Don,t give up it just takes time an if you can get to a knappin or have someone help you in person it deffintly shortens the learning curve. This is a hobby of tonnage, the more tons of rock you break the better you will get. Good Luck an Hope this helps ya. Later Bob