Excellent work, classical art at its finest. You're really talented. I like that you've added the Mona Lisa's style to this, since Loki was, for a time, female. In Norse Mythology he's known as the god "of both" and that has been taken to mean a lot of things; male and female, truth and lies, good and evil. So it's really appropriate to use the mysterious, and secretive style of the Mona Lisa. The detail is phenomenal and must have taken ages!
There's something about this that holds me here, and I can't bring myself to look away. Excellent job on his, I love his hands especially, and the minor yet great detail of his painted nails. Additionally, as with the real Mona Lisa, it's hard to place his expression here. This is really quite impressive!