2/5 Overall, I love the idea behind the cover: The subtitle is punchy and the picture is compelling. Though the latter is too pixly and low quality. What I would do in that situation is to search for more sizes on Google, or find a similar image to work with.
I like your font choice; it goes pretty well with the fantasy topic. The problem for me is that you don’t left any margins between the silhouette’s border and the body, which gives an unpleasant claustrophobic feeling. Also, it feels like it’s not properly aligned in consequence. Give your text a little more space to breathe.
There’s also not enough contrast between the book title and the subtitle. What I would do is to take the book title out of the silhouette and place it somewhere else, maybe above the model, to have more space to strech it out. Either that, reducing the subtitle’s font size, or using a different font for it altogether (which is the riskier of choices so proceed with care).
This is all I have sowwy.