The Process is usually>Iconic panels: (I.E Valentine's Justice, GER Pose ect.)>The person's fights: (Death 13, Gappy v Damo, Joubin's Beetles.)>Chapter Covers (Go to the wiki then go to the Gallery an pinch whats there.)
If I am really struggling like with Fugo, SCR, and Aya I'll cheat with bigger panels. Same with Avdols I just use less.
I try to replicate the original collage papes made by Harvest21 by that.
I have a friend on Skype I talk to (You can actually see the skype call in the tutorial screenshot last thread) and he generally helps me panel hunt and decide what to use or not use.
In truth the panel hunting probably takes the longest outside of colouring.
I have a folder for Volumes 6-17 Raws of VA because of these, heh.