Can I use this sign to mean 'people' (plural)?
While 'person' refers to a single individual, you can sometimes repeat it to indicate a few individuals. However, ASL has a completely separate, specific sign for the plural word 'people,' which uses 'P' handshapes moving in alternating forward circles. Stick to this flat-handed downward sign for a single person.
Is this the same sign used to turn 'teach' into 'teacher'?
Yes! In ASL, this sign often acts as an 'agent marker.' When you sign an action verb (like 'teach,' 'learn,' or 'dance') and immediately follow it with this downward 'person' sign, it changes the meaning to 'a person who does that action'—creating words like teacher, student, or dancer.
How fast should I move my hands down?
The movement should be a single, smooth, and deliberate drop from the chest to the stomach. It shouldn't be too slow, nor should it be overly forceful. A natural, crisp stop at the stomach gives the sign clarity and shows confidence in your signing.