Once you have wax on it, you're married to it. Wax is a protective coating. Edge paint such as Uniters or Vernis is what I recommend. If you have a double edge it needs to be cut or sanded flush or else anything uneven will show. Sand the hell out of it and apply, sand some more and apply then sand some more and apply a third coat. The best method is to use an electric creaser heated up to even out the first coat. It can be done with a hot butter knife heated up on the stove. It is a tedious job but that is how the exposed edges are done. Plenty of videos on YouTube.