Something I make sure to do is subtly show the bottom card of the deck before and after performing the control, for subliminal effect. Besides the issue of angles, something to watch for is having the spectator think you just put your cards UNDER the deck, rather than on top. Of course, not to be obvious -- this slight requires a casual approach -- but the spectator needs confidence that the cards in your right hand are returned on TOP of theirs. Otherwise, wow, what a great control! No cuts, no pass, just work on the revelation!