/ic/ - Artwork/Critique

Hiya! I have a question for people who are really good at drawing.

How big a line would you draw with your shoulder on overhand pencil holding on? How big would you draw your using wrist using the writing pencil on? I was recently told to start drawing with shoulder and overhand holding technique, but I always want to just use my wrist with my writing hold.

So if you could, on my image I made, show me how big on an A4 sheet of paper you'd drawing your smallest overhand shoulder line, and your biggest wrist line, it would help me to see how where about I should be doing things.