Here is the Raven Guard Dreadnought I decided to do as a cheap option for the project.
It is simply the Dreadnought from Assualt on Black Reach on a nice Blasted Wetlands base. Not a competitive option but thats not what the Campaign project is about. The Raven Guard had to rely on Dreadnoughts for heavy support with their vehicles destroyed during the drop. I may build a couple arm options for the Dreadnought as well.
I have added some lichen and flock to the base and those of my marines as they were very dark and had little difference to the Raven Guard armour - Thanks for pointing it out James. The scenic effects break it up nicely now. Next is the Mark IV apothecary I got from Pete a couple weeks ago, if anyone needs medical assistance its the Raven Guard after the massacre.
With the release of the Recon marines from FW I will be making an order where I will get the Raven Guard transfer sheet as well. Then I can add the Legion symbols to the Dread and the Tactical marines I already have. Other suitable units for the fluff would be a couple heavy weapon and Assualt squads. With the Raven Guard not getting specific rules until the third book I'll just have to make some generic safe choices in the meantime.