Caffiene and Nicotine

Finally! I've had this sitting around on my computer for ages, I think I drew this last November or December. I've tried to colour this many, many times. I probably should have been doing "Work" work today, but I'm pretty disillusioned with it and decided to try clearing out the 'log. I was so unhappy with the colours that I just decided to stick a solid colour over it. I still don't "get" colour theory, I don't know how to pick harmonious colours. Maybe I should commit myself to doing stark black and white work instead? I should give it a try...after I finish clearing out the backlog.