i did a quick edit:



copy+paste used because im lazy.

i moved the legs into holes in the front of the frame, i put hooves on it just because i didnt want to bother doing claws.

the wheels are pretty simple, i did a metal scale texture for the tread, i dont think rubber would look right on it.

the shading is really flat.

heres an edit:

i did an edit:



space ships tend to be compact and long, so i pulled in the guns, rockets and wings. i turned the cockpit into a half-dome, but thats just a style so you can keep it or leave it. i thought the rockets looked a bit funny just sitting out on the wings so i attached them to the main body. since your ship is yellow, i gave it blue rockets

very nice works

i recolored your frog:

very nice i wish the gameboy had games like this

some critiques:

your sprites dont meet gb restrictions, gb can only do 4 colors and for sprites transparent has to be one of those colors.

i have a couple of problems with the running animation, her legs dont move far enough and her breasts move too much imho. also, the legs have a strobing effect as baccaman said, making the back leg completely dark will reduce this.

heres my edit:



in the 2nd scene her left butt cheek looks a bit off, heres an edit i did to show you what i mean: