I use Paint Tool Sai, and you can see my brush setting on my FAQ: [link]
Phew that took me a while. Sorry for the horrible put together i'm lazy.
People have been asking me to make a tutorial a lot but I don't think I'm good enough to call it that so let's just call it 'my coloring process put together with vague explanations'! yay!
Hope you're happy because I should be asleep right now and instead I made this.
If you have a question please check the FAQ first, I may have already answered! [link]
OC (c) me