Kindle Book Cover Illustration

Hi! I need a front cover for my children's Kindle Book 'DINO ABC'. Style to be fun, colourful and eye-catching. According to Amazon, the design must be:

File Format / Dimension Requirements
 a .jpg or .tif(f) file
 at least 1000 pixels on the longest side
 ideal image height/width ratio is 1.6 (example: 1000 x 1600)
Information to Include on Your Cover
 Title [title of the book]
 Author [author(s) of the book]
 Cover image [an image that captures the essence of the book and grabs customers’ attention]

Needed ASAP please as the book is ready to publish!

Thanks,

Gemma