It's better, but there are still a couple of things lacking. One is a sense of what the light source should be doing to the forms and shadows—in fact, you seem to be developing some pillow shading in here, on the breastplate panels. Aiyeuch.
The other thing is, this looks more like plastic or bone than metal right now. Highlights on metal tend to be really strong and bright, as you'll see if you check the reference pictures you linked—even the least-brightly-lit one, in the museum picture with people in the background, has some bright white highlights. (Alternatively, since this armour is being worn by a skeleton, you could go the other way and make it distressed, tarnished, and rusty, but right now it looks pretty clean.)
Here's a really crappy undetailed paintover of the armour only to illustrate a bit (keep in mind that I'm not the most brilliant artist either, and I didn't spend a lot of time on this):

I'm assuming the light is coming from forward-above-(our)-left.