The author is @P3ttyQueen
The cover:

Summary: (not full)
(...)
I focused my eyes on the packet that had just one think missing, my signature.
With a swipe of the pen that was once in his hands, I signed it.
That was just it, just like that he became my ex husband.

Personal Opinion:
When I made this covers, I was feeling really excited due to that I loved the book. I stared reading it after the author asked for the covers. And I did it for inspiration at first, but then I started getting hooked. I have to say that the first plot twist in the story really gave me a shocked reaction. My best wishes to the author!