I'm new at Pixelation and also in the whole pixel art actually (been doing it for something like half a year now). Anyway, I saw this thread and desided to try coloring something. So I selected surt's alien thing and this is what came up to:

In my humble opinion, I managed to do it pretty well since I'm really not very good at pixel art (Yet! ). The shading is probably crappy and especially the weapon sucks.

The lineart is awesome! Was fun trying to color it.