Okay. So.

Covers are important, we established that in the last covers chapter.

If you're cover's really happy and smiley and bright, that sets a happy tone for the book. And considering this is a TWD fanfiction...somethings a bit wrong. 

Your cover should be dull, dark and maybe decaying or whatever. Not full of bright colours because that's not the tone.

Obviously this is just my opinion but I think it makes sense.

Okay? Good.