I want to share this car I just made up. It was done entirely in MSpaint, which was really a lesson in insanity, (click, click, click...)
but I wanted to have one in the MS style. All the carbon is line by line, and I even made small color changes to represent shadows.
I include the design sketches so you can see my angle. Go ahead and d/l it, scroll in, and take a look... I spent too much time on this thing, but I'm satisfied.
Come to think of it, I don't really recommend trying it. It's a fun little exercise, but whoa! Time consuming and clunky. Just use a popular photo editing program.