Either than that, it's nice for a first try, but I can suggest a few things, primarily getting a program like Milkshape so you don't need to use those crap stock renders on the wiki.
Second, instead of the white border around the carrier, i'd try and set it to a color that instead of causing it to sit out from the background, makes it blend as if it is actually part of the scene.
Also, you should learn to make engine trails with photoshop, I usually use a colored fuzzy brush with a smaller, white or whatever brush in the center, then blur it out in the direction you want. It looks nice if you get it right.
Great for a first try.
A million dollars isn't cool. You know what is cool? A basilisk.