Finlay's sketchbook (bugs warning)

[darktiste]

Not the easiest style to read but i think going more deliberately would probably destroy the vibrancy of the style. If i was you i would experiment with more value like 3(white grey black) or atleast have a mix of hatching for the rounding where light transition and some black for the part in the shadow.

Here an example https://www.youtube.com/watch?v=4Y0XVPprbYY