Practice, Practice, Practice!
kahearn is right.
Getting off the line is a biggy.
When you are watching the lights go down...
yellow
yellow
yellow
yellow
green
Take off on the yellow before the green.
By the time your mind tells your hands to
work clutch and throttle...it will hit green.
That is the amount of time that you have
to work with to make improvements.
(to start with)
Then you work on your shifting with constancy.
You ought to go on a "test and tune" day.
That way you can get a bunch of runs in.
If the guys there are like around here, they will
be glad to see ya and be more then willing to
help out with some pointers.
Have fun and be safe.