Players can celebrate when a goal is scored, but the celebration must not be excessive; choreographed celebrations are not encouraged and must not cause excessive time-wasting.
Leaving the field of play to celebrate a goal is not a cautionable offence but players should return as soon as possible.
A player must be cautioned, even if the goal is disallowed, for:
- climbing onto a perimeter fence and/or approaching the spectators in a manner which causes safety and/or security issues
- gesturing or acting in a provocative, derisory or inflammatory way
- covering the head or face with a mask or other similar item
- removing the shirt or covering the head with the shirt
This is part of law 12 on the FA website.
If the shirt doesn’t go over the player’s head, he shouldn’t be booked.