The biggest problem I had when learning it was not getting the cards to hit them thumb before the wet to spin, if you get into the grip and break off the packet and then use your middle finger to push upwards a little it should be easier that way.
I don't have any recommendations for music to use in videos, but if you're looking for music to jam to, check out my Grooveshark playlist. It's all the music I tend to listen to, and has a lot of upbeat fast-paced stuff.
I actually started doing this glourish two days ago. I got the grip after watching the video three times. It seems to be finding that 'sweet spot' in the pocket flip.
I will say, the middle finger packet serration is unusual
Just troubleshot why I wasn't getting EGR to work. And by the free tutorials online; there are A LOT of tiny, important nuances that aren't in the tutorial that SHOULD be there that would cut down A LOT of the time picking of half a deck of cards every time.