Is the other pit crew guy doing some form of Tai Chi or does he needs to take a leak, real bad!
Jk bro, I think you've done a great job on this.
Way to stick with it, your perserverance definitely paid off.
However, and I know how we all hate suggestions, especially when we want to be done with a chop.
But, I think to be perfect you need to do three things.
1. Remove the added pit guy. Props on the effort to make it better by adding more to the pic but in this case it hurts more than helps. The action is too distracting. Keep the focus on the car. If it there was a driver in the car and in more of a racing setting it would probably work better.
2. I would suggest you add the panel lines through the numbers on the bay doors.
They would appear painted on and more realistic.
They look like some big magnetic stick-on types or something.
3. I agree theres too much going on in that interior. Looks like theres an inflatable boat in there or something.
Lighten up the drivers seat then darken up everything behind the roll bars.
Thats it from me bro, take it with a grain of salt.
Regardless, again good job.