A nice job, Rodolfo. Good camo masking on those shields, and a nice job in the weathering.
If I could offer some advice: be careful when using decals that are out-of-register. See how the cross on the rear plate has white around the outside edges of the cross bars? That's a printing error. The numbers are also carelessly printed, and look a little inconsistent in their white borders.This can detract from your model's presentation. Usually, the "cheaper" companies (like Academy) are the ones that have this issue. Try finding some "spares" in your spares box or in another kit to use, or simply ask here on the forum--lots of guys have extra decals.
And one bit of advice on weathering--dirt or snow, when applied to the tracks, should be placed between the track faces (where it would pack), not just on top of them. And if you're going to have packed mud/snow on the tracks, side skirts and hull, you should have some on the wheel faces, too. They do, after all, slog through the slop, first.
I believe you have forgotten to paint your rope ends on the rear hull?
Hope this helps you. :)