Good idea with the snow - wraithguard would of course be rimed over, because they wouldn't generate heat/need to wipe off the ice. So full marks for originality and thoughtfulness.
The painting is only average, but the final group shot from a distance shows how they would look on the table, and there they really work, so full marks there too - a very easy paintjob which still looks great on the tabletop.
My only substantive criticism is the "warlock" - he is ugly, and it is difficult to see what it is he is, exactly: the sword conversion doesn't work for me at all. I would invest the time to redo him, or replace him with a regular warlock, as he is letting the side down. I mean, he looks like a runty little pet, rather than the leader of the squad.
But overrall, very good.
