The snow on the Dreadlord looks awesome.
The Dark Rider is a cool conversion, I would like to see some different angles of it though. Exactly what parts did you use on him? I don\'t recognize the horse.
I think there\'s some room to improve the painting, like placement of hilights and stuff, but you have a really solid grasp on the basics and your color choice is spot on.
Be sure to post more pics of your army, they are looking good!