I agree with DW and Pij, of course -- this needs more green. It is an improvement on the original, and I like the varying shades of green, but you do need to crank up the dial a bit more.
I must come out in favour of making the lips and (especially) eyes green, though. It's more faithful to the design, and can look very good if done carefully -- in a separate layer from the rest of the skin, using different/darker colours (your not doing so is the major problem with the eyes and lips in the original version) and making sure to keep the whites of the eyes as they are (they're not the greens of the eyes, after all
). Give it a shot, at least.