Looking good there, really liking the simple but effective conversion of the chaos stars on the dread. The yellow striping is also very neat and well placed on the models. I've done some IW back some years ago, and I'd encourage you to try out washes with greens + black and purple + black, gives you a very gritty look, and darkens recesses nicely. I can link pics if you wish, but I'll refrain form doing any plugs.
Keep up the good work.