A lot of golfers lack accuracy in all areas of their game for one simple reason. They aim the club in the wrong direction to start with. Aiming the club should be one of the simplest things in golf but very few golfers do this well, and I think it’s because most golfers setup at the final target instead of an intermediate target.
Whether you’re chipping, pitching or hitting a long shot you should always pick out your final target and then imagine a line back from this to your ball, and then pick out a spot about 2-3 feet in front of your ball that you can aim at. Doing this will make it much easier for you to aim your club, instead of trying to aim it at some target which is often yards and yards away.
Accuracy when chipping should be easy, but a lot of golfers find it difficult because they use too many moving parts. Your chipping swing should move pretty much straight back and straight through. It is especially important that the clubface goes directly down the line towards the target, even after you've hit the ball.