Okay if you ever played this game then you should know that there is a certain pokemon that can give you alot of stickers, and that pokemons name is Jirachi, and there is another way to earn alot of stickers, and that is playing the Subspace Emissary, and when you destroy alot of monsters there should be alot of stickers that come out, or the last thing is that you can earn them by playing the game in single player, and that is how to get alot of stickers.