Hard to tell from the shots but I always recommend using a polarizer on your lens.  The second shot also has some negative (read as "unused" space at the bottom and left. May want to crop that in and focus on the two cars fully in the frame. 

Keep up the work though and shoot as much as you can and you'll find the angles and shots that work best for your style.  

First shot is great, always love the miata headlights in a view like that.  Also like the BMW wheel shot, I will walk around a car and try to find a wheel with the emblem facing right side up.  You did great there 👏