When to play aggressively and when to drag again is key to changing into a more profitable player. There are plenty of regional variations, so you're prone to have to compromise on the ins and outs. Some say twos and jacks should not be combined, while some consider that if a player can't go, they want to keep picking up until they draw a card that may be played. If play will get really critical, make players decide up two every time they make a mistake, and pick up one for exposing a card to the group in error. You also can set the foundations so that players can't go out of the game on energy playing cards, or "muscle" playing cards, as some prefer to call them. The guidelines of blackjack are to get as close to 21 as attainable and beat the dealer.