You're off to a good start. Even though it's a damaged vehicle, the same little finishing details will still apply, such as filling in those knock out pin marks on the hatches.
For a burned vehicle, you may want to wrap armature wire around the wheels a few times to represent the remnants of the burned tires. The tool handles may or may not have burned as well. Fire is a funny thing sometimes.
Well, not "ha, ha" funny...
This paint burned right off of the tread plate of the bumper on my gun truck, yet hardly scorched the tow strap:
![](../../../i118.photobucket.com/albums/o110/18bravo_photos/Fire001.jpg)
The headlight was also toasted and had to be replaced:
![](../../../i118.photobucket.com/albums/o110/18bravo_photos/Fire003.jpg)