Use 'Warcraft 3 Image Extractor 2'
Use shades of green, teal and a lot of blue tints, with an lesser amount of white.
This doesn't look like very icy, try reproducing the ice texture on the banner of this site; http://www.sonsofthestorm.com/ and look at the blue man's hammer, interesting colors and effects no? now look at his skin, it also uses shade of purple, you used excessive teal as the main color, where you should have aimed for that hammer texture that is blue and white. for your shading, don't use the burn tool, or anything premade to darken it. use the pencil tool and smuge if available ( it helps a lot ) and put the darker areas you wish in a purple, and use smudge to spread it in the correct way.
nice try on the face, but you forgot nostrils, they're visible from that view, look at yourself at the mirror you will see. pratice drawing noses if you dont already. you're going on the way for the cheeks, but they're way too excessivly shaded, all that shading is unnescesarry! the cheek muscles are attached to the nose area. you should reduce the cheek muscle effect by 5x. look yourself at the mirror again ( that truck is handy for learning the structure of your face when doing some studies, or have a reference near you. ) as you can see the big shading isn't here, now take an angry look, there is more shading, but still, it doesn't match. Ice have a crystal-like structure.
the cheeks are too elavated, to remove this illusion, remove the black shading, as the cheek isn't very high in altitude unless you have a damn psychotic smile. the lightning could be directed toward the eyes, and near the top of the nose ( otherwisely, in game you will see two whites spots near his ears ( people will be like, wtf )).
that's it, make him nipples, and keep working hard, and study/enhance your basic knowledges about anatomy, if you wish to improve, it's already better than all those horrible recolors and such, be a chieftan, or a shaman, now you're only a grunt. and those recoloers and these horrible persons are peons.
beauty: 1,7/5 ( on the wormskull rating )
creativity: 2,3/5 ( oh well iceman, mushroom man would have been more creative. )
efforts: ?/5 (most important. it's up to you if you made a lot efforts and put dedication and love into this. as long as you made efforts, you should be proud of your skins. personally, i think you did some, beceause you made about 65% of the skin and did shading.