Nice car and nice shots, i think the fence post in the first is a little distracting, but thats easily cloned out... Other than that, can I ask why you have none of the cars rear? im not familiar with the M3 so for all I know it might have a fugly arse-end.
The 4th is easily my favourite, it shows off the bonnet-bulge which gives the impression of "POWARHHH"