© John Karlsson This is a sketch using pastel chalks, white charcoal pencil and a wight gel pen on black pastel paper. I did this sketch in the cold late night of last summer. The sky's where very clear and the temperature had dropped to +2C. Cold considering it was +30 that afternoon. The pastel is brushed onto the paper and then smudged in with a blending stump.darker areas are added with a kneed able eraser. Stars are done with the gel pen as well as the white charcoal pencil.