Here's a Quick video about scribble drawing with a portrait of Stanley Tucci.
Scribble drawing is a great way to practice loose sketching and focusing on values while drawing.
Chapters:
0:00 what's it about
0:10 what is scribble drawing
0:30 the drawing
1:33 the eyes
2:51 adding colour
3:34 finished portrait
#scribbledrawing #stanleytucci #penandink