Write the next sentence in the following story.

How to install mail slots in doors
Purchase your mail slot.
Buy the largest one that will fit on your door to accommodate larger envelopes and magazines. Another good idea is buying one with a basket to catch the mail as it comes through the door slot rather than allowing it to scatter across your entryway.
Stand in front of your door and determine the best height in which to install the mail slot. Make a pencil mark at that height to use when you begin laying out the template.