A Grand Entry...

This steel-clad door was given the look of wood.

Better quality exterior doors have stamped and raised panels. When simulating a woodgrain on these, each plane should be treated as a separate board.

Doing this requires extensive masking. Instead of tape, I used freezer-wrap paper and contact spray adhesive.
Contact adhesive allows for removal and repositioning of the paper several or more times.

Use a light application. Spraying too heavily will leave a gummy residue.