Mockup book cover

My dad has an idea for a kid's story, so I thought I would mockup a cover to help get him inspired. I recently came across Kim Smith's E.T. and was blown away, so used elements from that. Her work is insane, so go check it out: https://www.amazon.com/T-Extra-Terrestrial-Illustrated-Storybook-Classics/dp/1683690109?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=ad-backfill-s-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=1683690109