I am doing pixel art for a 2D android game. I am worried about the screen resolution. I am targeting a 9:6 aspect ratio, but instead of making 480X854 resolution all my existing images are 400X712. Is this going to blur my images or decrease the quality of the art? I really do not want to re-do all my art by stretching my images, then cleaning them up.

Also, some droids are 480X800 and some are 480X854. Will the game automatically crop the image or stretch to fit? Or will that depend on the programming?

I am a total game making noob!