First press the Pokemon, then battle. It's a two-player-only cause' I don't know how to do auto pick moves. Basically just spam Snipe Shot and Shadow Ball and you'll win a follow.
-----------THIS IS MY FIRST BATTLE PROJECT------------ If you won you get a follow but if I already have followed you then I will follow your studio or something. Also for the next version, I'll add two more Pokemon for you to pick. :D Happy battling