Get your takeoffs and landings down pat at the field, and practice stunts on the simulator if you have one.

I flew for years with no real improvement, and then I started trying to learn to hover on my simulator. I really am not a 3d guy but I learned so much more throttle and rudder control its amazing. Also the one huge benefit of practicing hovering on a simulator is that trying to get and stay in a hover is just CONSTANT crash avoidance and recovery.. it really helps when you get in trouble flying at the field.

Keep after it and have fun