Ben Zingo:

lack of anticipation and overshoot frames make this feel very stiff.
More body leaning and general movement would also help a lot!

Darren Evander:

unclear body language and acting choice.wave at the end is too fast.lipsync is decent.improve more!

Kyra Simone:

Expressions don't really match up here. Good understanding of the rig, but really draw out the poses so they're clearly matching the dialogue.

JJOneechan:

The lack of scene and emotion doesn't give the animation context as to what's happening. Elbow joints are sharp and there is no movement beside head and arms