A few suggestions,
Spend any local flights running through general handling techniques, steep turns, stalling PFLs etc.
Try an advanced PPL course, UH do these and I am sure others do as well though I cannot comment on the standard of anyone other than UH.
Difficult to comment on the Nav side without knowing your current abilities, again this can be covered on an advanced PPL.
Try an Aeros course - again great for your handling.
