You can read up on some of the back-story, over here.
  1. Choose an envelope size and position where the From and To will appear.
    Envelope size:
    You can manually position the From and To here, or just check on their positions.
    From position: ,
    To position: , (
  2. (Optional) Specify some text to show up in a box above the From and To marker.
    Text above the From marker:

    Text above the To marker:

  3. Enter a Starting location and a Destination to draw on the envelope.
  4. You can design what the back of the envelope will show by interacting with the map below.
  5. Get out your scissors!