My little opinion:
BLazeKraze:
In the first icon i see your great artistic potential. It is very correctly build (i mean anatomy\perspective) and looks REALLY warcraftish. But the second icon looks toxic and rough, reminds me old hive's icons that has nothing to do with art... missing some artistism... Third is neat and accurate, has nice shape, but try never use just one color in a icon. The fourth is a lil blurry and i dislike the shape a little (broken head perspective). But overall the pack looks neat. I hope with more practice all your icons will be the same perfect as the first one in this pack.
eubz:
Well. The first thing i wanna speak about - is contrast. If you won't show some more colours in the dark place - use black. That is about "bite" spell. All your icons i even saw was desaturated and pale. Also there i see the third, which is technically the best one, but, can you tell me what it is? Really hardly recognizable. And also, dude, try use reference picks for your working if you don't fell that you know how the thing will look like. that is about the blood drop with the light reflex. Overall i think, firstly - you can do better, secondly - you need more and more practice. Surf about warcraft\blizz icon style (d3\wow\warcraft) and other serious games (dota 2 \ league \ lineage etc...).
Heinvers:
Once i look your icons i see great effort you put in. They are athmospheric and looks somehow special. At the first - use reference, look how skull looks from side. At the second one - the same. Also, if it is hard to you making smooth shadows - try to avoid zooming too close. Third - again about references. The google is full of stepping legs picks, has with and without anatomy shapes. Also this icon is badly fits skill stylistics. It is not a skill, looks like item or upgrade, missing dynamics and SHS (something happens shit)

. The last - again about references the thumb finger is oversized and breaks whole image. The second thing - there is a light source on the palm, so, the whole inner side will be lightened. Dunno how fingers come dark. Just one advice - don't hesitate look google for reference pics.
Morbent:
Heey, i know you. You was the one, that post neat stuff over and over. And what is up in this pack? In this pack is DC(imo) fourth... You can be proud of fourth, it is really sexy

But about others.
The first does not looks like it is unit icon. It is nice for "terrify" spells based on fear and soething like that, but is not fits unit icon style.
The second is really hard to read what shit is going on here. Also it is looks rough and undefined.
The third... it is simple. That is not the problem, everything is ok. Simpliness means it is easy to read what you look at. Its nice. But i think you should use other mid color, cuz pink is not the color you wanna see in some destroy skill icon
The fourth is ... my passion. Godlike icon and 6\5 nontheless.
~Nightmare
Well. i think it is really good pack, i very love the shapes on every icon and nice flame-based skillpack. The only thing i wanna tell about that - a lil more fantasy please. There are two same hands that shows flame skills with pretty basic hand expressions. Overthis - it is lovely pack, i see big effort and nice potential
PeeKay:
I know this boy is lazy-ass ^_____^
Sin'dorei300:
AHHHH *heartbeat*
Stunning first and fourth. Thecnically are very-very nice and impressive. This pack is what i voted for. All icons are simple - there is not hard to see what happening and what it is showed (except of charm where you should use pink color as basic for icons like that). Shape and expression on the second skill is great. This pack is really outstanding by technique (much higher than others) and execution.
stein123:
When i saw your first wips, i thought - wow, this boy gonna be finalist. I love your really artistic shape works (the graphics ones). Impressive poses etc. But you really missing some digital draw practice. Purchase graphic tablet (wacom please), and go on. That i wanna tell - you have great artistic potential and nice skills irl for pencil and paper. So, learn digital, and show what you can do.
The icon pack as for me is dissapointing. A lot of too rought colors and color-works. ;<
The Silent:
You are the one, who leaves everything on the last days
Well, icons are fine by color and nicely fit sniper model. The problem is with effort. I see that you was hurrying and don't gave time in your icons. Second (the hand with ammo) is hard reading (undefined), third is blurry, the fourth is just rough. Also showing grey skeletons from far on black background is really bad idea

Give an icon 1 hour of work and it will look really better.

And for hand anatomy use reference picks.
Windrunner29:
Your icons are simple. Your icons are weak by execution. Won't hurt your feelings, but you may try a little more accuracy on your work. The same icons with proper detalisation and accurate execution gonna look much better. The shapes and angles are choosen fine, i love em. But you should really try clear images up.
By the way, work in big size (at least 600*600 or higher). @Photoshop put very low "flow" on your brush, to be able make smooth colors and lines with mouse. That is all for the moment
W.I.S.D.O.M:
The boy who impress me with the great quality of the last icon. As i understand - this iconpack is made by mouse-drawings. And for mouse drawing is just great. Very nice colors, and very nice looking .
First - needs more shaping on a nose and maybe on the skull shape. Also the mouth is just 2 lines.. srsly?

)
Second - from here i see - strange arm shape and the slash shape will look better if you make it smooth and more round.
Third - very nice colors and fine anatomy. Detalisation is missing and that makes me sad. But overall looks fine.
Fourth - outstanding and lovely axe (?) icon...
Well, that is all. Won't give any ratings cuz it is not correct by contestant. Thanks everyone for partipications. And sorry, if i hurt anyone with my a lil rough speech.