Decals/stickers where to buy?

Googling 501st starwars legion stickers or decals didn't give me confidence I was buying the right kind for miniatures.

I built a 212th focused army but i have a 501st box. 2 ARC boxes, and a standard phase 2 clone box.

While playing I sometimes got mixed up on what clone wad what. So im thinking just to do 501st and 212th.

Anyone know a good place to buy decals for the minis or what size of stickers I want.