Book Cover Design | Science & Nature

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

We are looking for a cover design for our new educational book titled "Spiders of California".
The full title on the cover can either only be "Spiders of California" or "Common Spiders of California - a field guide". Up to you what looks good. If the latter, the words "Spiders of California" should be written in larger letters.
The book has a lot information about spiders in general and provides a convenient and understandable identification guide about spiders in California.
The target audience are normal, non-scientist readers who would like to get a simple guide that helps them identify common spiders they will find inside their homes and gardens.
The book is written in an understandable, non-scientific language and contains numerous illustrations and identification sheets of all common spiders.
We are fairly open to suggestions about the design. It should not be too plain as it is not a classic boring science book, but aimed at the average reader. Readers ar… Read more