Hard to avoid that with such a low profile relief. Started with a piece of slate that’s only about a half inch thick. I may adjust the cheeks a bit still which will likely help with that. 

 i was thinking it could be the light also but nice work! 

 A bit of that too. Here’s a pic with different lighting. I just got new lights and a backdrop and haven’t dialed it in yet. https://image.nostr.build/b66262e449606d062e1e34f0d4b91595f66aa0c2e3893eeccfd754724eba23b4.jpg  

 cool, t-y 

 grinder. chisel? 

 Mostly rotary tool but some chisel as well. 

 prompted a follow & regard!  t-y Brekkie