What is the difference between 'sell' and 'store'?
'Sell' and 'store' use the exact same handshapes and location. In strict ASL grammar, the verb 'sell' uses a single, larger forward pivot, while the noun 'store' uses a smaller, repeated double pivot. However, many signers use the double motion for both, relying on context to clarify.
Do I move my arms or just my wrists?
The movement should come primarily from your wrists. Keep your forearms relatively stationary in front of your chest and simply pivot your hands forward and down at the wrist joint.
Does this sign change if I am selling to a specific person?
Yes, 'sell' can be directional. While the standard sign pivots forward, if you are emphasizing selling something to someone specific, you might move the sign in their direction to show the transfer of goods.