Hand and Wrist Position
Another tip is to always mind hand and wrist position. One of the major causes of slicing is that the club is twisted during the swing, which makes it hit the ball in a crooked manner, driving it in directions other than straight ahead. This is due to the hands and wrists twisting during the swing because of wrong positioning. The technique must be refined in order to correct this mistake.
Interlocking your hands by connecting the little and ring finger of your dominant hand with the index and middle finger of your complementary hand (never call that other hand 'weak') to solve this problem. This can help you prevent that unnecessary twist with a little practice. It can also help you improve in terms of accuracy and distance.
Straighten Your Spine
Always have your spine straight and acting as an axis for your swing. The importance of spine alignment can never be understated when it comes to golf. Imagine yourself as a pendulum with your spine as the point of axis. This can help you simplify your golf swing in a great deal.
With that spine straight and fingers interlocked, you must also remove excess hip rotation in your golf swing. While lots of hip rotation is something that can make a punch stronger, this is not boxing. In golf, that hip rotation causes slicing, and that can damage your game. Therefore, you must keep hip rotation as minimum as it is required. However, don't mistake this for removing hip rotation in your swing as it is still required to generate power in your swing.
Therefore, study how much hip rotation is needed to improve your swing. These tips, along with lots of practice, can help you remove that slice and achieve distance and accuracy in your golf swing.