The Librarians's grand battle

My entry for ItemAwardII : The Ultimate Fighting [link]
Phew...Because I was buried under my office work by day,I spent some nighttime doing this one. I still can't take it to the point that I wanted it to be,the details,composition and whatever...I'm not very satisfied with it. T T
So what do you think? Since it seems like I can hardly win any places.(There's too many great works out there) It was a good training nevertheless. It would be great if you can point out the errors,so I can keep on improving my skills.
Thank you very much~!

so this is the concept:
_{At the great Library of heaven,someone sent the mysterious being,The Swindler,to corrupt and alter all the information of the earth. But he cannot easily succeed his evil deeds since the Librarians are here. As they're immune to any kind of lies or illusion,They're assigned to protect the Great Library for generations.}
Also inspired from the song "Godspell" by The Cardigans :3