Tony.
This is good work for your first animation.
Sound track is well chosen.
I feel the sack could use more animating, until the last few seconds it looked like an inanimate object with all movement coming from the camera.
You could add slow movement such as having the sack look slowly from side to side. You could also make it look like the sack is crying with a slight rocking motion. Maybe a combination of both suggestions would help.
Once you've added a little more life to the sack you won't have to rely too much on camera rotation. Don't ditch it all together though as I think the slow zoom in/out worked well.
Nice work Tony, hope the suggestions help, I'm sure you'll also come up with more of your own.
Cheers
Mike