I saw the poster, liked the idea of the split face, and when I looked at the background, it struck me how it contained all the same colors. It was pretty impossible to frame a good picture, but I snapped it anyway, you never know what you can make in Photoshop.
It was clear from the beginning, that I would go for a half/half split image again, and so I had to do some twisting and stretching to get it all aligned. Additionally I fixed colors and contrast, but still, it was missing something. There was a unity in color, but the two parts of the image were too unrelated, and thus it fell apart.
My solution was a texture, and not a flimsy one 🙂
I rarely use texture overlays. So frequently they are used to simulate something that’s not a property of the image, but a property of its physical representation. i.e. age, but here I like it greatly, because it is obvious, deliberate, and it immediately ties the two halves together.