Wolf howling at the moon

This was an interesting engraving to do. I decided to engrave one of my favourite animals, the wolf, on a William Henry knife. The original photograph depicted this wolf surrounded by snow.
At the very beginning, I actually wanted to depict the snow. But then I thought that incorporating the moon in the design would be... cool. ( I am trying to think about another word, but just cannot find one at this moment in time.) I was rather happy with my decision but then something rather obvious struck me:
moon=night scene. And dear reader, engraving a night scene is not that straightforward. I was confronted with a few challenges. What technique would I use to depict " The Dark?"
Ha, hang on a second, I will tell you all about it in a few hours. I need to go for a walk in the sunshine  before it disappears!