Y'know what? Buzz isn't my favorite Disney character (he's not even very high on the list, as I was never big on Toy Story), but this is possibly my favorite piece of Disney fanart. And I'm a major Disney fan, so I've seen a lot.
I love your style. I love how you took the characters and drew 'em your own - and I especially love how you made the little green aliens look. Love the creepy you gave 'em. Also love the colors you chose (the nice, muted tones), and how you colored it. Love the black lines on the shading.
Like I said: I'm not a big Buzz girl, but I'm totally sold on this piece. Fantastic job, hun. <3