There nice pics, but they could do with some more editing, and maybe chuck some effects or LFS logo's around. Plus, having watermarks like "IGN.COM" wont look good in game. Another note, DONT STRETCH SMALL IMAGES! When making backgrounds, try and make sure that all the pics are the same res you are looking for. Getting an image and making it bigger will pixalise (sp, sorry, tired) most images, as proved in your image's..
Not a bad attempt, but you could do better. Give it a shot.
P.S, i know, why not do screenshots of LFS cars drifting? Will suite the LFS theme alot more imo. :/