Firstly I'll apologise for the frankly shocking quality of the illustration. But it gives a rough idea of an I idea I had while messing about with my Orrus/Captain. Imagine the picture on both sides of the carapace, with the scales overlapping each other.
While you've got that image in your head the scales should look roughly like these.
The extra plates on the marine, I'm going to scale up something similar to put on the dreadnought. On the lower leg and then up and over the outer pieces of the body to give it some scales, does that clarify things any? The drawing I did, wasn't brilliant but I thought it showed my idea.
Thanks, if you look in my Iron Dragon thread there are a few more pictures of him. I like the scale effect which is why I want to try and put it on my Dreadnought