Here's a project I just finished tonight! This is a turnaround of a character I modeled a few months ago, based on concept art by Matthew Gallman. I used quixel and tileable textures on this robot, and I have it setup in UE4 so I could easily paramaterize a vector, multiply it into the Albedo map and make robots every color of the rainbow.
It's a relatively simple model, and it only took a few hours to model, and maybe two or three hours to texture. Check out some more shots of it below.