Sort of a follow up from yesterday. Where I showed my sketchbook progress. I always liked the way drawing come out in sketchbooks and translating them to 'artwork pages' often upsets some of the character of the line or drawing. I don't really manage whispy lines well, more sort of a stab at the page. But i DO do underdrawing.
Here are the roughs lines for the Vampire Whorehouse spread, thinking and planning while drawing.

Then I stick the Layout Pad page over and build on it from there. I've piles of layout pads and marker paper pads for bringing sketches out of sketchbooks for finishing, easily best for short deadline commissions.

Vampire Whorehouse dps for NBC#3

But 'freefall' drawing is great if i'm feeling bold and often the results are more satisfying. Gungle thumbnails, in the main are around 3cm for a page then go straight to paper, sometimes in the bin but thankfully not often.
This A3
Forty Apes drawing on bristol board went this way, though no thumbs and Underdrawing free.

Though i'm saving for a lightbox, that looks fun too.