you should have baked the final gather points, that would have helped with the popping. final gather is good for stills, not so good for anything moving.

I'm not really a fan of the plane either. if it was curved with a bend deformer it would have been nicer. so you don't have the straight black to white/grey contrast horizon line.

model looks good tho, great work under pressure which is pretty much what people want in their department. as far as commercials go, its such tight deadlines that you sometimes find yourself working flat out for most of the night.
If you get the job you will fit right in!

good luck.