3D Car

I modeled a car over the last week or so. It's not the first one I ever started, but is thee first vehicle I actually managed to finish. As such I'm a little proud of it, but much more so, would loooove to hear what I did wrong and what to fix for the next time. I also UV'd it, but I'm close to 100% sure I'll need to completely re-do that. I'd also love some tips and constructive criticism there, too!