I just discovered this great blog: http://blog.spoongraphics.co.uk/
This tutorial in particular is mindblowing: how-to-create-a-suicide-squad-inspired-3d-text-effect
...
I love the idea of using the clone stamp with a grunge brush. Also the galaxy image and the colour gradient, both set to the Lighten blending mode, really makes the image come to life.
https://www.youtube.com/watch?v=AW-7JrLmBkQ...