Great work! Yay generalization! I faded the lure really late. Like, I still lure occasionally know despite having it on verbal. I'd probably wait until you're getting the behaviour readily before worrying much about fading the lure. Mechanically, I'd fade it the same way you fade any lure. Start using an empty hand, use some tricky slight of hand and reward from the other hand. I think it's awesome and hilarious that we're going to have a whole forum filled with handstanding dogs soon.