I think it's amazing work, Design wise I would say the front is bit too busy and you can do more with those kidneys, they look like a transplant for now, not own part.
The white car where they are blacked out already look better. I say look into older type BMWs for how they used that style, like 2002 and so on.
Also, try the fastback or shooting brake shape - like go for that Z3 M Coupe look. I think it might suit the shape more, wihtout the whale tail.
But all in all, thumbs up.
PS. Go for bigger wheels, this is concept car.
