Art by Jon Foster.
Design by Jamie Stafford-Hill.
And check out Cherie Priest's website for series, The Clockwork Century.
The first sketch was a real contender. It had action and might have more commercial appeal than the others. The second sketch looked a little too young-adult so that was ruled out fairly quickly. (Although it would make for a great YA cover.) The third one seemed slightly riskier than the others but also felt like, if all the pieces fell into place, it would be demand attention on the shelves. I'm very glad it's the direction we took.