This a little wall from transformers

It seems a bit flat, like Megatron and Optimus were just dropped on top of the bg so I'd suggest trying to blend them with bg.

Try to change the bg, it doesn't go with the rest of the wall...
clean up the optimus and megatron images a little...
there are extraction problems in the left most side of optimus..
good luck!

Yup, the background should have some more... something in it...

The background might have worked with something a little more simple, maybe a single good image from the cartoon, with some effects... but the images you have look more like something from a comic book cover maybe, and it really doesn't fit.

And unfortunately, I really don't like the "GOOD VS EVIL" bit at the top cause well... the "good vs evil" theme is pretty freakin' obvious anyway, it's Autobots and Decepticons! so the "good vs evil" logo screams "DUH" to me. That might just be me tho. XD