u/Far-Scratch-1577

I'm just getting started on my path & have a question about altars. I have a beautiful piece of slate with the wheel of the year etched on it, that I'd like to set up as the base to an altar. It was made to be a tray, I removed the handles & now there are 2 holes where the screws were. Looking for opinions on if I should fill the holes ( I'm thinking black wax, or a piece of a wood dowel that I could paint black) or just leave them?? I'm a bit of a perfectionist & this is driving me crazy.