Martial arts training ebook cover

I am working on an ebook project and need some professional-looking covers for these ebooks. The project is a series of books about martial arts training. The series is going to be containing 6 books for each their own subject. The title for the entire series is called Effective Martial arts training with no equipment or partner. The first one is the subject of Functional strength, balance and explosive power. This is the one I need a profesional cover for. Needless to say , that if this works out succesfully, an additional 5 covers could be involved. My initial thoughts regarding the design is a main picture of a martial artist shot from a distance in a standing and focused, almost meditative, state. Somewhere above him could the main title of the series be put. Below could be some specific bodyweight excersises small pictures and the specific title of this particular book, as outlined above.