The front looks great! I think the headlights need a bit more contrast, the rear wheel is off, maybe try swapping the front one with it as the angle looks more suited. Also the edge around the car is blurred and there are jaggered lines around the wheels arches, try using the pen tool on 0.3px for the feather. Also I would say the shadow needs to be blurry as there isn't much light in the background.
Keep going and practising!