Here's my first three paladins. They're not entirely finished yet, as I have to settle on Brotherhood badges for the three Paladin groups they'll be leading, which will go on their right shins in black.
Similarly, I have to settle on a badge for the Wardens, and decide whether they're going to share a badge with my next trio of Wardens, or whether I want to give the units separate markings...
And finally the Baron. I attempted a minor light source on his Baron Lance, adding an electric glow to the coils running up the sides of the lance. Not sure how well I succeeded; Saturday I'll get some input in person most likely. I have to make a banner for him too, but that's a project for another night. Ultimately, his banner will either be a larger version of the House crest, or it will be a scroll carrying the House motto. Don't know yet which.
As for the house Crest: Three orbs gules per bend sinister argent, sable (hopefully I got that right). Essentially, I wanted something that would link the House back to the Mechanicum despite their very un-Adeptus Mechanicus color scheme, so I split the heraldric field black and white, and put three circles on it in red for Mars, Metalica, and Cydonika. It doesn't clash as badly as I feared it would, and it's better than my earlier idea of using black, red, and green.