Old Work Single Gang Box Cut Out Pattern

UPDATE:I notice the hole was a little wide so I changed the width to account for this. I got tired of tracing around old work boxes so I made a pattern. This is for use with the single gang boxes that have the tabs that flip out inside the wall by turning the screws in the upper right and lower left corners. An updated version will follow with a built in bubble level. This is the very first design I have ever done. Enjoy. If you can use it, by all means, use it! Thank you for looking. Please leave feedback and/or comments below.