My Metal Slug Sprite Showcase

[AkumaTh]

Your recoloring is better, but they're still recolors. 

Photoshop or other Programs aren't really necessary to make good sprites. The most you need is access to your Computer's Default Art Program (like Microsoft Paint). As for Android, I am not sure. But if that is the case, it is best to simply wait for your PC to work and use the default program there.