Thank you for your comment. I painted on quite a lot of battle damage but I didn't want to do too much as I'm sure they repaint them between battles just like modern tanks, planes, etc., however, the work I did isn't amazingly obvious in these photos, if you look at the slightly larger versions here http://miniaturepainting.co.uk/gallery/science-fiction/blood-angels-contemptor-dreadnought/ it's a little more obvious.
Very nice simple paint job. Great arm placement. The mud effect is good. Might I suggest (as all these dreadnoughts are supposed to be few and far between and old) some battle damage? a bullet dent etc...just an idea :)