a graphic of an eBook to post on my website

My website is http://jennifergrainger.com. I need a graphic of an eBook to illustrate what the 'seeker' is signing up for. I have attached the .pdf of the cover of the eBook. The graphic doesn't have to exactly duplicate the cover, but should be closely similar. As a guide to the colors and type style I like I have also attached the graphic for the home study course I offer