Very nice, the long grass looks excellent and gives a nice impression of the unit pushing through the thick jungle. The pictures are taken rather far, but it seems the actual bases are just painted green. Maybe adding a few spots of grass turf here and there would be a simple way to elevate the entire thing to a even higher category? Any case, I really like what you have done here!
I agree with Caprasauridae. The movement tray itself looks super good. Getting the bases of the figures up the same level would really make a difference. I wish i had movement trays like yours.