Car Mockup

what do you mean by a "car mockup" ? If it's from a car template they're usually 1/20th scale whereby all you have to do is make sure your scale is locked and click just after the width or height type *20 then hit enter. i.e. 2.0"*20
We use a 12" magnetic strip to slap on the actual car then take a photo and scale the photo up until the magnetic strip is 12".

What Myron and David said. The templates are close but usually wrong.
Here's a twist on Myron's version.
I cut a 4'' square out of magnetic. place it on the car and take a picture.
Open the picture in Corel and draw a square over the square in the picture.
Now powerclip the photo into the square you drew.
Resize the square to 4''.
Now click on the square and hit powerclip and extract the photo , perfect 100% size.
I do this 10 times a week, hasn't failed me yet, quick and easy.

NUTTZ