While working on the grille I changed the factory bumper by removing the 4 large bullets in the grille and added a 57 Chevy light bar. Inspiration...
Here is the car after starting some shading on the front clip. I use the gradient tool on the color pallete for blends and for the light highlights like on the hood you can either use white and turn down the opacity, or if you don't want a "see through" shape, you can use a lighter shade of the same color. Easiest way I can think of doing this is to double click on the fill box on the color pallete bringing up the color picker pallete and then simply drag the spot to a lighter shade.
Here is the car with as much as I wanted to do in Illustrator and ready to import into photoshop.
Continued below...