Do you want to have some illustration on front cover as well? any suggestion, regards,

I like what you have done, but I also need a back cover. 

Be careful you may have copyright problems with that image
https://www.google.com/search?q=herd+of+instinct+conjure&source=lnms&tbm=isch&sa=X&ei=GMZaU8jcN-SYyAPTzIDQBQ&ved=0CAgQ_AUoAQ&biw=1423&bih=854#imgdii=_