Where have I been?
It's a bit hard to distinguish things at first glance, at least for me. There are some things you could do to improve readability:
Replacing the current leaves' colors with those of the of patch of grass on the map and bandanna, which helps by not only decreasing the color count, but increasing readability--drastically, in my opinion, giving the background more of a fog and making the bandanna stand out more. (On the downside, I suppose you aimed for a sort of light-shining-through-leaves effect with the intensely saturated colors, which this greatly diminishes.) I've also reused some colors from the bandanna to fill in for other greens, I.E. the eyes.
Another way of decreasing contrast in the background by getting rid of highlights on some of the leaves, as I've done here. Also made them blend in a bit more.
I agree with Helm in that the arm's position could be changed, although not so drastically as he had. But the least you could do is alter the anatomy of the forearm, to make it less tube-like (forearms are usually wider towards the elbow). The position you have sustains a better sense of motion, but the crystal-materializing phone thing is held at a perfect right angle, unusual for that situation. It could be tilted more, I think.
Edit.
Few other things: edited the area around the brows and forehead. Made the cap cast a more obvious shadow. Cleaned up the scarf a bit, but it could use sparing dithering, such as the rest of the sprite.
