- Make a start with an IMC rating course
- Make a start with an unusual attitudes/aerobatics course
My 2 cents worth
Find out what you should have been taught on the PPL course and make sure you have covered all of the syllabus. An awful lot gets left out with some schools/clubs or gets glossed over.
Go over cross country flying again and get as much experience in as you can, also fly with more experienced pilots.
The best and cheapest place to learn about airmanship is on the ground, read, ask questions etc.. You can learn an awful lot by reading accident reports.