Dear smilebaker (paul kim),
I like your crown. What I liked about it: The anatomy was built into the crown, not finished in; You used internal staining instead of surface staining which gives the crown so much more depth/chroma feel to it; The translucency (incisal) looks very natural and blends in with the dentin (body) very well. Overall, superb job.
If I was to critique it, I would only suggest not using white stone (use buff) to do your model work on, the metal collar could be smaller (make these as thin as possible),and the dissectional groove on the mesial aspect goes over the mesial marginal ridge in two different places, the cusp of carabelli could of been placed more to the occlusal. Now I was nick picking here, because this is an absolutely beautiful crown and took me a few looks at this to nick pick it, but I hate when lab techs take a look at my crown and say, "wow, nice job" and leave it at that, I always preferred someone to nick pick it. Now all my suggestions were just personal opinions, and that's that, nothing more, I'd be VERY pleased to have that crown you made in my mouth, be proud of yourself.