Looking great buddy!
The colour is awesome, it really pops which is good. When you're adding lighting and tones, try not to burn the colour of the car too much
When you create shadows on the car, be sure that they don't lose too much colour. Basically, when you're making the orange darker, it's turning to grey instead of to dark orange. To fix this, when you use the burn tool have it set to "shadows" with a low opacity.
The highlights are looking good, to keep the car glossy, also have the "dodge tool" set to "shadows" to give a nice glossy look.
Also make sure you're adding sharp reflections, make them clean cut and well defined to make the car look nice and shiny, if your reflections and highlights are too soft, the car begins to look very toony. Don't be afraid to add coloured reflections on there either, the entire car doesn't have to look very orange.