Image Cleaning

well ive enter a lil comp with my mates on cleaning up an image we had 3 stocks and i have chose this one

http://hsb.rom-source.com/forum/uploads/post-1-1098845694.jpg

and this is what i have so far

http://homepage.ntlworld.com/s.rate/Car2.jpg

any one give me any tips on how to improve on it? or wat i could do ito it to make it look more professional.

also if anyone knows wat car that is please its a porché what? i sux at cars lol

if you could help would be great i wanna try and show them that im more then just 3d abstract and the other doodles i do.

thanks guys