Keep at it CR! Practice, practice, practice those corners at speed. I suggest finding a new housing subdivision somewhere that doesn't have heavy traffic (watch for nails & other builders' debris). Get up to speed and practice holding your line and accelerating out of the corners. Better yet, get a few guys/gals to do it with you, so you can get comfortable in a "pack".
Keep racing too...that's really the best training. Nothing compares to the intensity and adrenaline kick you get from it.
Happy racin'
~BikeMomma
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." --Albert Einstein