What, no criticism on the weathering? Ignore the tank for now.
Oh this is Railwire
sorry I thought I was on (Censored by FCC)
Your drybrushin' is not dry enough, try wiping the paint off until it takes multiple passes with the brush
to get any color on the model. try to keep your rust effects vertical (I have a huge problem with that - King of odd angles :-[)
I like what you've done with the chalk keep it up
there's great effects you can get with chalk...
a string of military equipment will look great! Post more photos!