I've been trying to learn on the street also. I plan to track soon (first time ever) and I want to be able to do it. I find that the pedal being hinged at the floor makes it difficult. I also end up mashing the brakes to get a good blip. I think I am just going to have to practice in the garage and learn to do it on the track. I can downshift without breaking pretty well though!
2008 IB E92 M3| BBS | KW | Arkym | Platte Forme A.G. | Active Autowerke | K&N | Fabspeed | Dinan | Evolve-R