Well, at least you freehanded it.
But like TurtleRacingCar said your better off showing your first skins in a place were helpful critiques are specifically asked for rather than submitting it with skins that have meet the standards and are worked through all the way.
Anyways, You should download Warcraft3Viewer if you plan on working with skins, given your screenshot I'm assuming you don't have it. It will allow you to test your skin immediately after you make changes to it. (hold down both mouse buttons to zoom in).
The color of the face is really bad, one thing I found out works pretty well for getting the right colors is using the eyedropper tool on your concept art or another texture to get the right colors, so you could do that on the demoness/fel guard/or any of the chaos orcs. Your hair tone dosn't look as bad, but blond hair is tricky to do so opening up a picture of someone with blond hair and doing the same would be good here as well. Not sure if blond really works with it though - you should go black, red, or brown.
All your colors are really flat, you really need to add more contrast and shading. This is even more important for metal (depending on how shiny you want it). Basically get it going from black to white; so the shadows are black and the highlights are white. Pretty sure Mr. Goblin had that in his tutorial actually.
You should look into more skinning tutorials so you can figure out how to work with the alpha channels (team color and invisibility), From the screenshot and your skin it looks like the team color was not modified and it clashes with the work you have done so far. Being able to shift team color around and remove areas of a model through its skin can be very useful, so work on that to.