Step 1: do your selector picture.
2: Press the "print screen" button on your keyboard
3: Open a new "paint' document
4: Using the Edit tab at the top left of the page select paste.
5: Use the paint program to crp the pic to your desired result.
6: Save the pic as a jpeg file. Not a bitmap which are monster big files
7: Upload it to photobucket and do the usual.
8: Remeber to buy me a drink next time we catch up!
As for the extra bits like stickers and exhausts, they can be cut and pasted from the bug or Porsche selector.