I learned the "thumb propulsion" move a while ago from a friend, and then more recently I came across the tutorial for it here on Theory 11. I was hoping that it would provide some tips on aim, but they seemed pretty vague to me. Something about the direction your finger is pointing, but it doesn't seem to be working for me. I'm rarely able to predict exactly where it will go, and sometimes it flies in completely the wrong direction. I'd like to be able to land the card on a table, or shoot it up into up into the air so I can catch it, but I can't get enough consistency. Any tips?