The power of photoshop

HOW???

Look at his sleeve. It doesn't match up

MS Paint > Photoshop

not very good job, especially because the colour palette on the chap doesn't match the one behind him... also the light shining over the top of his arms indicates the light source is directly behind him yet in the photo it is more to the right

That looks really badly photoshopped actually. Look at the difference in light between the bg and the subject.