The steps involved in taking the raw 3D printed model and post processing it get to a finished painted model.

The brown putty that I am using is a automotive air drying spot putty that can be found here: https://amzn.to/3zezhER

The paint primer is a filler primer that also helps fill in any imperfections, this isn't the exact brand I'm using but the same style:
https://amzn.to/2VTQbKx

A lot of people are commenting they want to see a matching spaceship build... Maybe... but I don't know where I would keep it. How about his moon rover vehicle instead? Let me know in the comments.