Monsters indeed! Or the trapped souls of the damned. I love it.
Do you like the service you are using to sell your images on phones and items? I use a few and do fairly well, but am working to move my things to my private site, still being built (taking too long as I am doing it myself)
I love your work and it really does translate well to this type of product. I think it's an amazing time for we artists. We can see our hard work sold over and over on things for people to take with them and enjoy every day! That's a powerful thing, I think.