Step 1 : Scan that sucker !
You might not think this is part of the coloring process, but it's important. After you've finished your line art (which i might do another post like this for in the future ), having a good clean scanner and a fresh paper on which your line art is that's not bent or dirty will me the coloring process much easier.
Step 2 : Clear that sucker up digitally !
Now i don't think every artist does this process, because it's not entirely necessary, especially if you've either inked your work or think that your lines are strong enough already. I don't most of the time, so i open up my handy picture editor (i use a software called Photo Suite ), adjust the constrast and VOILA !! cleaner looking line art !
I use Open Canvas to color my work, the really old one though. You can get it for free here http://wistinga.online.fr/opencanvas/, you have to pay for newer (and i presume better ) versions of open canvas. Anyway, back to what i'm supposed to say here. (lol)
hehehe, Part 2 will be for another time. Bye Bye for now !!