Question: what are the hand signals in football?
Answer: Advantage (Play on) Hold a hand or both of your hands up (like in the image) so everyone can see you allowing advantage.
Direct Free Kick. Hold a hand up and point to defending goal.
Indirect Free Kick. Raise your hand up to indicate an indirect free kick.
Corner Kick. ... 
Goal Kick. ... 
Penaly. ... 
Yellow Card. ... 
Red Card.