I think those mechanical equipment above is competing with your subject.
Horizons tilted too.
I think you need to light inside the vehicle and under too.
And find a way to get rid of that massive shadow.
I agree about the massive shadow for sure, I have no large modifiers or strobes to fill them so bare was essentially my only option which caused damn defined shadows unfortunately... it was a good learning experience for sure...
as for te distracting mechanical equipment, I agree that it is a bit distracting but I'm not yet sure if I prefer it cropped in closer as I was intentionally going for the wide angle perspective.






Still have a loooong ways to go. 

