So the 1st pic I did when I was about 15 about 1984. This was my first attempt at pastels. It came out much better than I expected. The second one is the same. I drew this one last week. It was my second attempt at pastels. It also came out better than expected. I sent that one to my daughter. She loved it. Now, the last one is an attempt at sketching a photo of my grandson. He and his mom got a good laugh at that one. So did me and my niece. Everyone says it's a good cartoon. That was not what I was trying to do. I'm going to attempt your rule method. How do I get the measurements on the paper. Is that the length of the paper. Also, how do I get that perfect circle?