I'm having writer's block and need some help!!!

A long time ago I start to write a Sci-Fi/Fantasy Illustrated Story "The Evanas". You may had view few of my "Evanas" sketches on my DeviantArt gallery, well this gallery!

Few of theses sketches were created to attracted peoples into reading my story of "The Evanas" but unfortunatetly not many peoples comments on theses Evanas sketches and much less read the story!

lol
I always got tones of ideas to create stories or short stories but I'm not very good at developping them and finishing it. Now I'm stock on The Evanas Story, I don't know if I should keep on writting it and sketche other Evanas illustrations or maybe I should just give it up? Any idea on what I should do? Should I give up? Is it good enough to keep on going? If you had red my unfinished Evanas story that I had put on my DeviantArt gallery you may be able to help me by giving me some idea or advice on what direction I should go with the story?
First let me refresh your memory about this story. The Evanas are women who live on another planet called The Women Planet (not very catchy, need help with the planet name too!lol

), anways they are aliens who hate human, especially men, no Evanas every gave birth to male, only female. The main characters of this story are Jade, daughter of Elvia an Evanas and Pierre a human. Elvia her mother is the daughter of The Evanas Queen, Eva who's cold and heart less. The Queen Eva possessed lots of magical powers, well all the Evanas do but the Queen is the most powerful one! There's more to this story but I will stop here or this Journal entry will be to long!lol
You can read my unfinished story of The Evanas on this gallery, you just need to click on one of my many Evanas sketches and click Download at the left of the sketche. You be able to know more about The Evanas and maybe give me some ideas and advices to unlock well unblock my writer's block!!!