Ok first off the biggie. this car is way too WIDE. Classic Ferraris such as this are small cars, yours is too wide. So what you first need to do is just pull the inside inward . I would not scale it thinner since that will screw up your the roundness or shape of something that you have already. What I would do in this case is use the symmetry modifier on your car (this is max right?) ANyhow if so use that and adjust accordingly. [EDIT] I see this isnt max, well I'm sure that blender would have something similar, if not then you just need to cut the car in half it it isnt already and pull it together closer. cut any excess mesh out.
Next the headlights, you fixed them better like others asked, but now they need to wrap a bit more around to the side.
The front also needs to be a lot rounder. Here is a picture I found that will give you an idea about the roundness.
