Tools
Pens, rulers, and the digital kit.
The kit
You don't need much: a pen that won't smear, a ruler you trust, and something worth drawing.
The list
pen pigment liner, 0.1 / 0.5 pencil 2H for guides ruler steel, not plastic paper 120 gsm, toothy eraser the kneaded kind
Digital, optionally
Everything below can be done on a tablet with pressure sensitivity. But the mistakes look better on paper.