Tutorial: How PVP Is Coloured

Here's a GREAT video of how Scott Kurtz colours his webcomic, PVP. The demonstration of how he adds shading is particularly intriguing. He's actually got another colouring video and a drawing video here, and both are well worth watching. Through his YouTube homepage, I found this fabulous demonstration of digital inking by CWGabe. I wish I knew how he got such even line variation in his Photoshopping. I want to learn how to do that.