they're not the same image it looks like (I dont see the exact overlap of amazon clouds the way her image is setup). You could make an argument for palette choice but i feel as if you shouldn't really be able to copyright pallete (though i do know you can trademark colors like UPS brown, which im not really happy about). Also this artist does pixel art which is pretty standard style, so there is a good chance someone could make something similar on their own without having look at her work.