First Go to Donate Click how many points u wanna donate. Then put your card in the fill in the boxs it wants then confirm it. Second Go back to epic pwi panel then click on shop choose your char. Third then click select and pick what in the shop u what and click donate. Fourth then go back to game and login go to your mail box by your bank and accept your mail what u got from donating.
That should be all.
MarioBro