brushes i use for sketching, lining, and colouring, i'm too lazy to change brushes during my process,,,,
my brushes rely a lot on pen pressure, so that i can do shading easily by layering colours (or even the same colour at different opacity !)
it is recommended to use overlay texture at Strength: 20 and Blending Mode: Darken

sometimes, i paint over the faces with a less transparent pen !

Pens
Texture