Just to explain: I know it's a small sprite, but there are some parts that are visibly pixelled (for example, the white line at the top of the airplane and the general roughness). Obviously it wouldn't be a tough work, since you could just add some soft pixels here and there.

About the colors, I wasn't used to work with limited colors too. But this sprite, for example, doesn't need so much colors. Reusing colors wisely, you'll see that to pixel will be easier and cleaner.

Keep the good work! =)

I tried with 8 colors, but it wasn't working out so well for me. :( Like I stated, I don't usually work with a limited color palette. I don't understand why it would need AA since there are no outlines on the sprite. I appreciate the crit though. :D

170 colors, wtf. I think 8 colors are more than enough. With this color count, you could, at least, improve the shading and add some AA.

Good sprite though!

If I get rid of the dithering all together, when I animate it, it won't look like the plane is "vibrating," like with the last version of this I uploaded.

I would just get rid of the dithering, it's not really contributing to the piece much