1) If your skin appears on a round icon to the left of this button, click it and click Log out, so the button says Login
2) Then click Login and enter the username of the person you wish to get coins for and click Continue
3) You are now logged in as that person, proceed by adding some coins to your cart and checking out!
Done! Your friend will be happy to receive a generous gift from you :)
Enter your exact Minecraft username as it appears ingame so we know who to give your purchase to!