My Friend Ray book cover design

This is what a business in United States was looking for in their book cover design

Hello, my author name is Ellie Lynn and I would like a book cover designed for my upcoming novel called My Friend Ray. It's a fiction based off of true events. I really like the idea of rough scribble art of a black cat wearing a red bow tie with a thin elderly man with messy hair and a cane. However, I'm open to other types of designs as well. The story is has dark undertones but is lighthearted at times.
Tagline: "An imaginary cat. A dying man. A story you’ll never forget."
Updated ** Here is the book blurb:

Based on True Events – A Story of Love, Loss, and an Imaginary Cat Who Made Everything Real

In a quiet nursing home, where the days blur and memories fade, Ray is an aging man facing the final chapter of his life - until a sarcastic, wisecracking, and entirely imaginary cat named Theo leaps into his life.
Narrated by Theo himself (because who else could do it justice?), this poignant, hilarious, and unexpectedly life-affirming tale follows Ray as … Read more