Dingbat Adventures in Trickle Valley question

Hi there, Dingbat Adventures in Trickle Valley is a new adventure series for children. It is currently available on Amazon globally as a kindle book, or through Amazon.com as a hard copy. As its a brand new series, I would welcome some feedback on the visual appeal of the cover and what you think of the content. If you go to the book's page in the Kindle store, the first two chapters are available as a sample. I would love to hear your comments and would really appreciate your thoughts.

Many thanks in advance