I will say you picked a PERFECT time of day for photographs! Shooting with direct sunlight is always very nasty so great time to go out shooting! The golden color from the sun at that time is the most faltering color on anything whether its be a person or car.
I hope you dont mind if i provide a couple helpful tips..
I also feel like you picked some neat locations. One thing to remember is that you took your car out to get photos of it. So take car photos. Showing some environment is great, but make the car the center piece of the photos. Use the awesome graffiti wall but maybe not show all the words. Stand back and zoom in so you have the car is most of the frame. The car then becomes the center of attention...and the graffiti becomes a cool background! Only other this is to use reflection to your advantage by making the car look real nice and shiney (which it is btw..haha..it looks great!) but look out for reflecting images on the car that will make it look funny. Hope this helps a little bit with the next time your out!
Awesome first job i will say though..and you have a nice camera to learn with!
.Chris Bacarella