Once you can swing with your feet flat on the ground, start to let your feel roll in one after the other. This will give you a feel of sequencing as we build into your full swing.
Here is a review of methods and techniques you can try practicing in your short game.
What you want is a swing that you can rely on under pressure. Shutting the face avoids complicated timing sequences. Here's how to pull it off.
Tour pros hit lower shots in their short game compared to average golfers. The first way you can begin to control trajectory is by using a lower lofted club.