I think this illustration is hand make because I think the have used ink for the pants. This look like it has been drawn with a pencil and then go over in ink.
인체소묘 Croquis 써니
how to draw figures | Sketchbook Assignment # 28- Draw a people sitting.
Paintings by Sylvie Guillot
Cereal Box Art - Bedtime Kitty with single white mat. ©dianeduda/dudadaze
Artodyssey: Harry Emans - great example of strong perspective
love the colors and warped perspective