This is a unit i am working on called a Hover Tank (Name will change when I think of one). Also this is my firt time at skinning a model so it may not be very good but it looks good for me for now. Look Below for a pic of the tank.
a good start, however needs a LOT of improvement, skin needs to be totally redone, model is lacking in details, maybe add a hover engine, air intakes etc.
(sorry if that was a bit harsh, but it' for your benefit)
Matter of fact as i look at it it reminds me of a pancake with a turret on top. It definantly needs some sort of booster. And id try to make the turret more unique. (that was harsh also but constructive criticism)