Good ideas, but for me there are a few issues.
- The front wheel. It should merge with the shadow underneath, and also it would be at a different perspective. The rear wheel is at the right perspective, but I don't think it looks good. Way too much camber for me.
- The shadow along the front should be deeper. And along the side it should be a bit better. There are tutorials on that.
As I said before, good ideas. And you've chosen a good background for the car, and the slight color change is good. Keep it up.