Attach and Tighten Shower Head

What happens here

Hand-thread the shower head onto the prepared shower arm until it is hand-tight. Then, use a small adjustable wrench to give it a couple more turns until it's snug. The video implies carefully using the wrench directly or with a protective cover (though a cover isn't explicitly shown, it's best practice to use one to protect the finish). Once the shower head is securely tightened and aimed correctly, slide the escutcheon plate flush against the wall.

Goal: Securely attach the shower head to the arm and finish the installation.