If it were up to Tesla, we'd have flying cars by now, and maybe less plane crashes. (i read he developed a way to transmit electricity through air over long distances, which is not being used today, i'm not really sure why).
Pretty awesome, the face and colors are nice.
I suggest not using the red on the right eye, makes that area look plain, i'd go with one of the darkest hair shades on that. Also, you shouldn't use the same red tone to shade his skin on the right that you used on the collar, since the collar is black and his skin is white: maybe add another shade or use that brighter red that you're using on the highlights.
If you change your mind and want to get closer to the original, make his face rounder by making the left cheek bones more pronounced, and the profile less straight (adding a curve, moving more to the left), make his nose bigger (also, moving it to the left) and make the eyes bigger too. Shouldn't be too much of a change from what you have, not too hard i think. Also, i think the left eye (our left) may be a bit too high up, but it's too soon to say from what you have.
Oh, and that sweet sweet shading on the (bottom) lighting bolt, i like that
. Please, do use it on the other bolts.
