[There was a question about how I approach the refining stage of a shot.]
Usually I go by chunks. I attack the first 50 frames or a section within the shot. Bit by bit and go through all the elements, root first, then chest, , then hips/legs, then head/arms, then face and fingers and detail stuff. Of course that order can change a bit depending on the style and content, but that's usually how I go about things.
Happy accidents can happen but I wouldn't rely on them. :)
I also get back to the basic blocking movie so that I don't loose the essence of the timing. Sometimes during polish you can get lost in the graph editor and worry about nice curves too much and then suddenly all the timing is different. Curves don't have to be all nice, it just has to look alright within the camera (without crazy cheating of course).
It's good that you changed the camera for the ring, but I would actually go even higher so we can see the surface of the table. Right now it's super flat towards camera and it's a weird perspective having the table legs in perspective yet the table is flat. :)
The camera push in is so subtle, I actually don't think it's needed because it is barely moving forward. What's your intention with that move?
Anim wise it's going in the right direction! For your next revision I would take a pass on all the pauses where your poses change. There are a lot of linear key moments where the movements suddenly stop and continue. So think about the ease ins/outs and the arcs of the root, arms, etc.
I would also look at the eyebrows a bit more. There are some moments where you could add some complexity to it. For instance during the sigh, and when he picks up the box and walks away. There could be some physical strain and other thought processes driving the brows during those sections.
The silhouette for the hand when he takes off the ring is good! Speaking of hands, as you continue with the breakdowns, start to add a few more poses so that they don't look like IK hands, sticking in space. For instance when he pulls the box towards him around x325 to x320 the wrists are pretty much locked even though his arms are pulling.
Hope that helps!