As with any activation, testing is key. Before going live, run through the experience exactly as a participant would. Confirm that your branding and messaging display correctly, test several different photos against your match library, and verify that results are displaying as expected.
If you are using Look-A-Like as part of an in-venue production, be sure to include it in your pre-event run-through, testing the complete video board workflow using the same equipment and setup you plan to use during the event.