Some other comments which I were:
- The mushroom cloud does not look like a mushroom cloud.
- The opening scene could use a little more of color because the way I have it right now, the opening scene is very dull.
- The breaking of the glass of the hour glass can be slowed down.
- Leveling the overall color in the animation since it jumps a lot.
- The ending was very well done but goes towards different style. May be unify the style within the animation to make it more coherent.
I intend on fixing all of the problems which my instructor highlight. I will be posting some updates on the improvements soon.
Here is the first pass of the animation which I have: