I did, years ago. You need a sharp razor to cut it, some soapy water in a spray bottle (liquid dishwashing detergent and water) and a special squeegee that is really stiff so that it squeezes all the soapy water out. The one we used was given to us by a family friend and it was just a squared off block of some clearish silicon rubber on a handle. It really helps to have an extra set of hands to help peel the backing off the tint, otherwise you'll end up putting little creases into it which become visible.