Help with Peterbilt-359

This is my first Blender model using the Peterbilt 359 and I’m stuck on the cab area. I find no tutorials on big trucks like this. I’m not even sure if I went about this the right way.

my blend file

Truck Front
Truck Back
Truck Side
Truck Top

What is wrong with it?

I didn’t say anything was wrong with it, I’m not sure how to approach the cab.
I never done this in case you missed that part…

this is a start:

Does he or she talk… ?