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.
Now that you can roll your feet, hold your position after impact and then go into your finish. Start to get a feel of how your feet cause your leg to rotate, which causes your hip to move out of the way of the swing.
Foot action cannot be overstated. This is where your power comes from. The more you can sequence this out in your swing, the more consistent and balanced you will be.