Try to get more shots of the rig from outside of it... the bouncy ones in the cab never come out very well.
Rule of thirds for photography... google it.
Do not be afraid to pan out for wide angle shots... they usually come out great.
Follow the truck through shots sparingly, as it lacks depth and scope. It is cool from time to time, but can remove the truck from the landscape... making the shot look like just another wheeling shot.
Good start. Good luck. Looking forward to more videos.