You aren't supposed to match the wheel position of your car, to the original one in the background. That way you are changing your cars proportions and it looks squeezed like the one above. Just find a background from the same angle and perspective, hold the Shift button when you are resizing your car, and you can make it a bit larger or smaller, but you'll keep the original proportions of your car (and with a bit of touch on the bg it will look just right). Don't get me wrong, I'm trying to help you and hope you understood what I wrote. Cheers and keep practising !