Stug, the build on the everything looks very well done. Very nice, very solid, good work.
Take my snow comments in context with your title. If they've moved at all then these apply.
Couple of points on the snow, based on some photos I'v seen, I would add some snow to the tracks and running wheels. I would also put some ruts where the AFV has been. Muddy up the snow behind the tank. The way I would do this is use dilute white glue and apply it with a toothpick, then spinkle the "snow" on. Two ideas for coloring the snow a muddy color, either add a drop of brown to the dilute white glue or wait till the snow drys on the AFV then ligthly apply a brown wash to it. I haven't tried the first one, it just came to me now.
If they haven't moved then I would add some scuffles on the AFV as if the crew has just gotten in and is preparing to leave.
One idea on the base, take some strips of contruction paper and glue them on to add a nice finishing detail.
So to wrap up on a positive note - I really like the tree. That came out well. I love seeing 'different' elements in a dio and the horse hits that mark

. The Stug came out great. I do like the tracks, the color and sag are great.
I like the fact that the base isn't square! Cool.