[Ηades]

Kinda confusing that you cant really see whos typing what.
I can see its darker but you should move that "icon" to the other side.

[Crudii]

I would rate this 8/10.
The keyboard looks incredibly identical.

[Vizual X]

Maybe copy the line with the diamond shape to the other side and link messages from the individual users?

Other than that the design looks amazing! Great work!

[RonanD]

This looks incredible, I really want to use it now!
As others have said, perhaps follow in other apps' footsteps and have the sender and receiver on different sides when they message.