Tips from Jesse Hammさんのイラストまとめ

Compare, too, Wrightson's veiny, fetid, tragic Frankenstein monster with Frank Frazetta's fine but less evocative versions.

"It is very difficult to paint even a bad picture." ~Edward Burne-Jones

Horizontal image/balloon placements slow pace and invite consideration. Good for drama. Vertical placements quicken pace; good for comedy.

Those quotes are from the excellent "Carlson's Guide to Landscape Painting."

Modern size limits are partly (but not totally) to blame. Note the more contemplative feel of the 2nd strip's POV.

Peter Arno.

To learn how to consolidate shadow areas into simple, form-defining masses, study James Montgomery Flagg's portraits

(Conversely, in a scene that is mainly black, you'd spot whites, because those will then be the attention magnets.)