Thanks for the replies, guys. When I was painting it, the highlights looked at lot brighter, almost too bright, I thought. As it's dried though, I can definitely see they need punched up a bit. And darken the darks as Evan said.
Never did get the color right. It's more of a copper/green/brown hue. Evan, you're right, painting metal is not as easy as it looks. After the fist layer, it was very yellow. I glazed a layer of brown ochre over the whole thing, then another. Decided in the end that I didn't mind where it was at so I left it.
The lighting is coming from the back right. I put a table in my studio and hung a flexible neck lamp on the wall. I placed it on that side because I'm left-handed (or correct-handed as I like to say. All of you righties are backwards
). It's easier to paint shadows that way. Would it be "better" to extend the lamp to more directly on top of the subject or maybe more from the side? I'm starting to pay more attention to how everyone sets up their still life paintings and I have room to modify my set up.