Sorry about the delay: I don't check this all the time.
Regarding your question about waxing an item, it would depend on the job you have done and the finish you want. You could just use a satinwood paint straight onto wood and that is made to be a durable finish so you don't require any more protection for your piece.
On the item above I did a chalk paint effect on the piece and that would come off fairly quickly with wear and tear if I did not use a few layers of wax. The wax will protect the paint and made the chalking more durable. I am going to post pics now of another piece that I waxed and that waxing was to protect the wood.
Hope that helps ;-)