Heel-toe is only for braking, you don't want to have any throttle when you let out the clutch. If anything, you may want to over-blip it (not overrev) and give it a moment to drop down to the correct rpm to let out the clutch again. It takes some getting used to as mentioned above. Over-blipping is MUCH better than not blipping enough. This can cause the rear wheels to lockup which is no good under hard or light braking.

 

There's a couple things that have helped me learn

1) As mentioned above, some aftermarket pedal have an adjustable bottom that extends closer to the brake pedal.

2) Make sure when the brake pedal is depressed is it roughy the same height as the accelerator. I'm raised the accelerator pedal a bit so there isn't a signficant height difference.

3) Ive forund that I actually roll my foot clockwise as I move my heel over which make it easier to get move foot on the pedal.

 

Your 3rd thing above is a good point but make sure you're doing some fancy dance move on the pedals. You don't want to do anything that could cause you to fluctuate brake pressure while blipping. This is really easy to do on cars with a soft pedal. I actually recently found myself making silly mistakes like that moving from the Touring Car to the more stock-pedal-feel GS M3.

 

Make sure you don't have any slack in your gas pedal as well, that can mess up your downshifts.

 

It's so easy to do. I can do it in my sleep.

 

Neat.

 

I'm really glad someone posted something about, "big toe/pinky toe." I don't know what your foot size is, but my foot/ankle just does not roll that way. I've always taught myself the said method and called it, "in-step/out-step". I'm by no means a pro, but as long as I'm not going ***** to the wall on an autocross course, I can rev-match pretty well. I haven't been road racing yet, so I have not really had a chance to give it a legitimate go in competition.