On this occasion I have made a portrait using white chalk, black crayon and a rubber eraser. It was drawn on a black cardboard. The model used was a neighbor.
Step 1. The first lines and spots delimit the character's face and jacket.
Step 2. The shading is progressed and the tips of the fingers are used to blend the chalk
Step 3. Some shadows were made with a pencil eraser and some details were refined using a black crayon. And ready. That's all
I hope you like it. Thanks!