Joshua Eton:

Try adding more texture and better light source for next time. I’d also argue to add more timing on the facial expressions to bounce more natural.

Moses Justin Ginaba:

good

Richard Clark:

You should shoot reference for this. Lacks fundamentals. Arms look IKish. I know that she's sitting but the hips/root needs to be more involved in order to support the movement. I would consider starting with the bouncing ball exercise before doing performances.