A good idea! But if the box wasn't proud enough, I suppose you could screw a couple of sharpened screws (points where the heads were) into the box lugs and use them to mark the plasterboard?
It up to you how you want to do it,another way is to drill a hole in the middle of the socket area then use a padsaw & cut tight plasterboard round against the metal box,but remove the cable wire to prevent damage.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local