Not bad, looks like you've had some training. Keep working on perspective as far as your linework goes. The back looks a little too truncated, narrowed and rounded, and front lower valence is a little too blocky. Define that far A-pillar a little more in the front view. Your marker cores look pretty good and gradient areas are nice and smooth without looking muddy. That's tough sometimes.
There's no way to rush the process, it takes many years and millions of mistakes. Stick with it and don't be afraid to make a mess!
