First, watch the players(they are good experts.) how to defense :
Lead ♥2, dummy ♥K, East ♥Ace, declarer got 9 tricks.
Result : 2♠E+1
Another table :
Lead ♥3, dummy ♥10, East ♥Ace, declarer got 9 tricks.
Result : 2♠E+1
Second, see my hand :
Lead ♥3, dummy ♥10, East ♥J ! declarer got only 7 tricks.
Result : 3♠E-2
How about the defence of Gib? Gib defence is really wonderful in this hand, I meant that it is very interesting to try to become a good partner of Gibs.