Hi, I am Christina,
This is my second rejected project. I don’t understand why at all.
The reason was - " The item does not meet our minimum design, animation, and technical requirements. We strive to accept professional quality projects, and unfortunately this submission doesn’t quite meet that criteria. "
What exactly is wrong with my project?
My project: https://youtu.be/jIavEIX6hFY
In addition I want to ask you about expressions. How is it important to make it universal?
Hi Cristina.
If you´re going to use 3D, it has to be more detailed about elements, textures, lights, etc, to create a great atmosphere. Besides, you are using just one screen for the entire promo, there´s no transitions, camera movements are too basic and short. An important thing is that you´re using stock images watermarked with the logo of another company like Envato, use Envato stock images for previews. It´s like trying to make a Coca-Cola promo using bottles with Pepsi logo.
Good Luck and don´t give up! 
Thanks for your feedback! 
I think you’re right about watermarks, I’ll keep that in mind in the future