Great character styling.
Perhaps review how glasses look in side profile. I would imagine that you would see the corner of their eyes, and the glasses would be a little flatter in this view. The bridge over the nose wouldn't be visible either.
Maybe this guy is a good reference?
http://media.gettyimages.com/photos/young-man-wearing-sunglasses-side-view-closeup-picture-id200568699-001