I just finished playing with him and I have to say, he rocks! He's so funny and looks like a jumping pumpkin roaming around with some dangerous green chemicals and with a cool gas mask. All texture particles, effects and animations are done very well. Personally, I don't play Heimerdinger, but this skin may actually change my mind. Anyway, for my taste it's pure success, so I give him 10 out of 10 this time.
Well done with this skin, I like it :D