Real print callouts worked step by step, from arrow side and other side to sizes, lengths and tail notes, so reading the reference line becomes routine.

For every common defect: what it looks like, what usually causes it and what you change in your settings or technique to fix it on the next pass.

Bevels, root openings, tacks and distortion control, set up in order, so your test coupon is right before you strike the first arc.