Here we see some in-progress pictures of the spaceman's torso.
First, I scraped down a spare robot torso to give myself enough room to sculpt new details and have the figure be relatively the same size. One difference is that I made the width of the shoulders a bit narrower for the spaceman.
Then, I went to work adding the tubes. The body is made up of tube covered areas and cloth areas.
Here is a bonus sketch of said spaceman.