Elaborating on what @Bac_Stab said (or at least my interpretation of it) the positions of the characters feel too unnatural, especially with everyone standing perfectly upright.
This is most noticeable in the girl dropping the tray of donuts. How did the donuts fall if she’s not? What’s causing them to fly forward?
Changing her position to better represent this would help the scene feel more alive
It’s so very cute and pastel, amazing
K, I understood! Thanks! 
You should also add bevels to everything, even if it is just a little bit. Nothing in the world is perfectly sharp
How can I add bevels? In blender?
Apply the bevel modifier. Do that with each sharp object in the scene. Don’t go overkill with the bevel though.
K, thanks! I’ll try to use it in my next gfx!
AMAZING! I love the textures, everything is fine. It looks pretty clean and realistic good job.