Thanks Joel.
Yeah the iris looks a bit too large to me, too, but I'm not sure what I can do about that. If I shrink it down, I'll end up with space around it, since it's not attached to anything. I think what I have is the result of what I mentioned last night, not being sure where to go with it, where to end up with the edges.

I'll see what I can do about dilating the pupil some and putting it in a head and rendering.