Practice the fundamental skills that will make you a better player. Practice dribbling in between cones or chairs for better ball-handling skills. Practice shooting 3-pointers, free throws and mid-range jump shots to develop an all-around shooting game.
Work on dribbling with both hands to become a better ball-handler. Being able to use both hands will help you change directions and move more confidently around the floor. Practice shooting left-handed and right-handed layups equally to be able to execute either one depending on how the play unfolds during the game.
Ask a couple of friends to help you with rebounding drills. Have one player shoot the ball while you practice boxing out the other player. Turn your back to the player as the ball is shot and use your body to establish position. Jump and catch the ball as it bounces off the rim.