anyone know how to remove front seat bottom cover?

my seat is failing and need to be replaced and seems I cannot find any instruction..

Thanks!!

 

https://mbworld.org/forums/c-class-w...er-s-seat.html

Linked thread above has instructions on how to remove the seat or just the seat bottom. I have a seam tear on my bottom cover that I'm in the process of trying to replace. Does anyone know where you can find original seat covers online?