3D Max models- Mechanical ears

This is a 3D model of VeePees' mechanical ears, which allow him to ear on account of having no ears of his own. I was aiming for a rusted metal texture, as I wanted the ears to looks like an old piece of antiquated equipment, but I couldn't quite achieve that. That will be rectified in my final 3D model.
I like this design as it has a distinct side profile and silhouette, which will be visible when looking VeePees in the face.