Be a nuisance
When the opponents have opened, we have many tools in our bidding arsenal for interrupting their auction. One especially good one is the jump overcall. Instead of bidding your suit at the cheapest level to show five or more cards, bid your suit one level higher if you have six cards and a mediocre hand. Taking up an extra level of bidding space can spell doom for your opponents. It also provides your partner with a good description of your hand, and helps him know how high to compete. Watch as Tina manages to rob the other side of their profitable spades contract with a jump overcall!
After watching the video, try playing the hand.