I agree with Aprilgem. You want your cover to attract curiosity but also represent what's inside. The cover you made on the link doesn't do your book justice. Look at Sci-fi book covers and you'll find the image draws you in. Makes you want to open it up and find what's inside. Your cover is an advertisment and needs to be eye candy.

 Keep working on it & if you need to find an artist to do the cover....you are in the right community.

 Good luck,

      Orchid