Cover and title for new book: Singer

Hi, It's Ray again.

I'm having trouble with the titles and the covers for the 1st book of the Singer Saga, the one about Astrid who rides dragons. I'm hoping you can help. Reviewers said that the prior cover with the vendetta coin (the last on the list below) does not evoke the story, which is about Astrid and the dragons. Following are some new cover ideas.

The criteria for the cover is that it captures your interest and entices you to  click on the image to read the book description. I'm not committed to any idea yet, but I need a cover that captures the attention without lying about the contents.

Thanks for your help!