Quoting John Stahlman
Good job! I tried making a DF hardsuit, but it turned out looking more like a mech. Don't know why you shouldn't post instructions. Someone could figure out how to build it pretty easily by looking at your pictures.
It is actually a very simple build, I kind of surprised myself with the simplicity of it all. All you need is four couple of 1x1 bricks with four studs on each side (forgive me, I'm not fluent in part-naming) and connect them with 1x1 round plates and you've got the body. The rest is just greeblage.