I draw by hand (fashion drawings), scan the drawing, import it in Illustrator. Then I use Image Tracing and Live Paint to colour my drawings.
How can I easily draw shadows on the clothes and the skin?
You will find an example below. I "Live Painted" the zones and I would like now to add shadows (on the clothes and on the skin) as if I would have a source of light coming from upper right.
Thank you for reading.
Edit after answer:
I chose to add additional shapes (strokes) as follow: