For a while now I have been studying various visual aspects of medieval knights armor in order to reprodruce them more convincingly. The first ones I am showing here, in pencil, were done a few months ago and really helped understand how the different pieces were put together in order to keep attached to the human body. The other one is more recent, and I'm mainly trying to understand the reflectivity of the metal. I'll probably do more of those, my metals look terrible when rendered from imagination.
And the drawing that prompted me into doing that metal study (admire my 'beautiful' armor from imagination, no references):