That plane is great. The pixelated propeller, while I like the pixelation, perhaps could be anti-aliased a bit because the contrast is pretty sharp to the rest of the plane. Because it seems more like a pane of Minecraft glass than an object in motion.
hey default, nice work on skull kid. i for one opt that you keep that strong pixel-ness, as it goes with the whole zelda style. sometimes pixelated is a good thing, it's all about that certain "look" you're going for, i guess.
That being said, do you really need more than one pixel borders? In the image you posted you might, but that's about 4 or 5 times the size it would be on the DS. I imagine a single pixel might be wide enough?