Firstly, I want to say your style is pretty adorable and I love it. :)
Secondly, I was actually wrong when I informed Liseth that markings are layered over chestplates. They are not; I was confused by the amount of markings that completely avoid the chestplate area. I tested it out and indeed the chestplates layer over the markings:
http://i.imgur.com/Kp8y7yD.png
(Just a test scribble; not representative of anything)
So your original idea is indeed possible.
If I can find the free time, I might give it a try. :) Thank you for your suggestion/depiction