And here's the last of the three drawings of different animals that I made using crayons. This one was a final project, where I had to implement all the techniques that I learned during that drawing course.
@amur leopard I used a blade
Edit: Well, for the top of the head I used a blade. For the chest, I put another paper above and with a pen, applied some force to leave a mark on the drawing paper. Then I painted it.