First and foremost is the lineart preparation. You’ll see methods or read about how the black lineart needs an undertrapping of gray so your colors will always line up and not have white creases touching the line art. This is crucial, and here’s a tip
This is the lineart Macro - copy, and in most modern versions of photoshop you can click and drag these to the action menu and it’ll self install! These were recorded using photoshop’s actions and saved as “lineart prep”. What this does is make a lineart layer w/the trap built in, on a transparent layer. 30 steps you can avoid by using a macro.
Note - in CS5 and some other versions the last 3 steps will say “action not available”. Just hit continue, skip these steps and you’ll get your lineart either way, but you will have to have to delete the spare black copy channel manually. Shouldn’t be a biggie!
I will put the step by step of this method next if you’d prefer not to trust a stranger online!