Looking for a Digital Painting/Lineart Mentor

So I especially suck at two things right now - painting and lineart. I'd like to tackle the painting first. I can barely do monochrome as it is, but colour absolutely stumps me. You wouldn't believe that I spent two years learning colour theory and painting traditionally! Lineart is probably something that I can get the hang of with practice though. I vaguely know what to do, but my hand decides to do something else!

Tutorials are little help to me but if you have any good ones, I'll give them a try. I'd really like someone to sit in on a join.me and give me directions though. That'd be a huge help! If anyone is willing to do this I'll reward you with a giftart using the stuff you taught me. Thanks!