Ok LEFT click on the color you want to get and RIGHT click on the color you want to change it into.Now get the eraser and hold RIGHT click and move it everywhere. The first 2 steps might be backwards and stuff..
It looks like you resized it.Don't ever resize it. And you didn't recolor the outlines properly. There still is some blue on the outlines. But still that's pretty good for a beginner. You should scratch some stuff on.