With a buried lie you must use your sand wedge as a digger to get below the bottom of the ball so square the clubface to dig into the sand and create a more downward swing arc
Look up and down at least twice to burn an impression of the line to the target in your mind
There are two parts to the release, one is the arms turning over and the other is the body turning, we need both of these to release correctly but most of us tend to over emphasize one of them