First thing:
You have to be in Online Mod, choose a time between 5:30 and 7:30, drive around in a moderate speed but not to quickly or you mighty risk a crash and you have the chance to use the real lines over the Nordschleife.
Than just go to your replay and do some photos in a realistic Angles. To get to know that, you should check out several Car Blogs like Speedhunters or Downshift Australia for some examples!
Also it's good to know, where a lot of photographers take photos on the Nordschleife.
This particular shot was taken @ Adenauer Forst. This is a place where a lot of spectators come to watch the action on the track!
The rest is made with Photoshop using the Color Balance and some warm photo filters to make this all a little bit more alive
Hope this helps, and glad you like my pictures!