On the opposite end of the spectrum from most of the regular posters here, I just finished my first season racing track (and doing any competitive cycling).
I learned that a have a decent "jump". It was the thing I consistently got complimented on throughout the season. Just got my upgrade from 5 to 4.
I need to improve basically everything else. Specifically a little bit of stamina for longer races, I essentially have none. Proper implementation of tactics as well.
Change? I'll actually train over this winter, since I did no preparation going into racing this season.
Next three months I will be constructing a basic winter training plan, which will be a first for me. A bunch of weight lifting, some roller work.
I really enjoyed this season, and really like sprinting and weightlifting.