What kind of cover do you have over the skull?
It looks very similar to these from Van Dyke's:
Van Dyke's Skull Cap I order some from Van Dyke's and do these antler plaques myself:

Very dark picture, but you can tell a little about them...

Sorry, AW! I'm not trying to take away any business from you or hijack your thread! You do some awesome work and I hope to bring a "good un" to you one day...I'm just trying to help out some "poor ole deer hunters" that might want some DIY projects