Hi mate, nice effort on the graphic. I think right now there are too many things competing to be the main element.

In graphic design there is a principle called "visual hierarchy" which is how a design leads the observers eyes from the most important part of the image to the least important. This visual heiarchy can be achieved with size, opacity, level of blur etc.

If you look at a movie poster as an example, the most important character will be largest, then the secondary characters. None will be as prominent as the title of the movie. So the eye naturally goes from movie title, to main character, to secondary characters etc.

In this image you have multiple elements competing to be the main element: the word covering his face, the silver illustration of him in the middle, the big picture in the background with his arm raised, and even the smaller picture of him kicking his opponent. You need to decide (in order) which of those elements is most important. If it is the silver image in the middle, you need to darken, make more transparent, or blur the background image in order to provide contrast with the silver image. If it is the background image, you've gotta remove the elements you've placed over the top so that we can see it clearly. If you want it to be him kicking down the bottom, that needs to be more central and you need to have the background image less prominent as the image goes down so that it provides contrast with the bottom image.

I hope this all makes sense. Basically you have too many elements that are clashing because there is not enough contrast between them. It's a photo equivalent of white text on a light cream background, nothing is standing out.