I did this quick Blender scifi test scene in Blender. I was inspired by Rutger van de Steeg (https://www.artstation.com/artwork/yYGL5) and tried to recreate a similar result. One image is just the render with Glare, the other one is with Glare, some color grading and then I added a silhouette of a man in Gimp. I doubled the silhouette of the man and turned it upside down, then blurred it a bit to make the shadow.

Gloss map grunge texture: https://www.photoshopsupply.com/patterns-textures/grunge-texture