The Softboots Tale

The tale of two of my stuffed cats, Crookshanks and Betsy, as they fall in love and run away together. The book title comes from the surname they adopted when they ... well, spoilers.
It may not turn out as well as I would like, but I won't let that stop me.
(a note on their names: Crookshanks chose his name after falling in love with the Harry Potter series, originally his mother had named him Puss after the legendary tale of Puss-in-Boots - and while, yes, I originally named him after Dreamworks' Puss-in-Boots, in this universe he's named after the original as the movie hadn't come out yet. Betsy's original name was Kitty, short for Katherine, and by total coincidence (in-universe coincidence, irl she was also named after a Dreamworks character) her last name happened to be Softpaws.)

Book cover is currently temporary but do you like the texture of the bark on the tree? I could use advice on realistic tree drawing.