Brainstorm ideas for Book Cover

I brainstormed 3 different genres of books: Fiction, Non Fiction and Childrens Books. There are two mind maps for fiction as I found quite a lot of books. Here are some of my ideas:

Fiction

• The Lord of the Rings
• The Lovely Bones
• The Kite Runner
• Wuthering Heights
• A Chill in the Air
• Moby Dick
• Breaking Bad
• A Series of Unfortunate Events
• Twilight 
• The Clockwork Orange 
• A Wife's Tale
• Leviathan
• Moby Dick

All these books include either, water, air, fire or earth in some way so have relevance. Some even include more than one element.

Non Fiction

• Dinosaurs- when the comet crashed on the earth and wiped them out. 
• Gardening book which could be about anything such as: vegetables, cacti, trees, flowers, fungi etc.
• Wildlife- garden pests, insects such as: butterflies and bees etc.
• Natural world disasters like: Tsunamis, Volcanoe eruptions, earthquakes and hurricanes.
• Autobiographies and biographies

Childrens Books

• Charlotte's Web
• The Secret Garden
• The Very Hungry Caterpillar
• James and the Giant Peach
• Alice in Wonderland
• The Wind in the Willows
• Midnight
• Candyfloss 
• Dragonfly
• The Rainbow-Fish

The two ideas I like the most is a non-fiction book and a fiction book. The non-fiction book is one that I would create myself about dinosaurs because I could incorporate more than one element on my cover. I could have an image of earth (earth) a comet hurtling towards earth (fire) and the oceans on earth (water). The other idea that I liked was a fiction book called 'The Wind in the Willows' which also has a lot of relevance to the elements.