I'm no expert but I think the flop shot is all about confidence. If i'm playing well I can hit a beautiful high flop from about 10 yards away from the pin and stop it dead, other days i'll just thin it into the bushes or water.
Here's how I like to hit mine. 58 degree lob wedge with 8 degrees of bounce, place the ball slightly more forward in my stance than my normal wedge shots, then i like to open my stance so it looks like i'm setting up to hit 5 yards left of the pin (if i'm around 10 yards out) with my weight slightly bias to my left foot, then i'll open the face so it's aiming slightly right of the pin. Then i'll give it a nice smooth full swing, making sure i accelerate through the ball. I try not to get to handsy through the contact of the ball but I like to almost feel as though i'm flicking my wrists on impact, although i'm sure that i don't

. Maybe what i'm trying to say is don't be afraid to get creative with your short shots as with any shot under 50 yards relies on feel rather than a good swing and muscle memory. I'm sure some people will disagree with what i just wrote but thats my take on the short game.