That self portrait is totally hot, man. I agree with strych, you nailed the likeness on that. And the colors are wicked too. Love the warm pallette and the use of the blues and purples.
One small observation, and it might just be the work posted here and not indicative of things on the whole, but your stuff from imagination tends to put the heads either in profile or full frontal. I noticed it immediately with the latest one...that full profile view of the scene really flattens things...I _think_ you're going for two creatures sorta looking at each other here, but I'd almost like to see the creature you've started sort of circling a bit around the hanging creature, with a bit of sideways motion and facing a tad more towards us (and maybe the opposite effect from the hanger)...bring focus to one of the creatures and increase the sense of space. </rambling>
"Every generation sees the past though the lens of its own time." - Thom Hartmann