Is there some kind of meaning behind this that connects the 4 different elements? It seems random, and each picture has a totally different style. The heart looks real/photo-like, and the tree is a sillouhette, and is that a bomb going off in the middle? That style is somewhere in between. Why a barcode?
As well, the blue and green clash isn't really working for me.
Explain your idea and we might be able to help more.
Critique and comments welcomed.