Looking good mate, however, where the left door panel comes out from its well, it has just a drab grey color for what would be the hole. Doesn't look right to me, might try a black or something.
And while the front doors look fine texture wise, the rest of the model looks... too grungy. Or if there is that much grunge, there should be some more paint being chipped off on the corners and such.
At the moment I can't really tell what kind of material its made out of, it looks like it may supposed to be a metal, but it looks like concrete at the moment.
Good start though!