Fold the fabric panel you just press back up to meet the other panel.
Fold the panel closest to you back again and run a thin bead of fabric glue along the salvage fold.
Fold the fabric back to meet the other panel and match up the pattern. Press with the hot iron to "set" the glue.
Open fabric up and run a stitch along the fold line you created when you pressed the salvage .
Open your fabric up to reveal perfectly matched pattern repeats.
Now, go try it!