Open the face of the club
Exadurate like the pros to really open the club. "Bounce" is the part that is supposed to swing through the sand and be able to bounce back up again after the club has passes a few inches into the sand and under the ball. If the strikingsurface or the front of the face on the other hand hits the sand first the club will dig its way down and will be uncontrollable. Then the ball will most likely stay in the bunker because the club has dug too deep.

I know that I've been "nagging" in those whom experience difficulty with bunkershots to open the club even more. The answer usually is: "But then I won't make it out of the bunker and end up short."
Thing is that the more open the club is the more it bounces and therefore doesn't take as much sand with it and goes high and accuratly long.
Jesper Parnevik has nice bunkershots. The club is flat as a pancake. Take a look the next time you get the chanse, you'll see...


Open the stance
Since the club is opened up the stance has to be opened up to correct the aim. Especially on the shorter bunkershots.


Bury your feet.
To help with getting further and below the ball with the stroke and have a more rigid stance and not slip in the sand you drill (twist) your feet down firmly in the sand during the setup.


Swing a full swing
To make the club bounce up enough after hitting the sand the trick is to swing through thoroughly. If it's a handfull or a pinch of sand doesn't really matter, but the speed of the bounce will decide how close to the hole you'll end up.


Stay down...
As you might see in the picture it's important to sustain the bodyposition (hanging) over the ground (or like many would say, keep your head down).


Swing it calmly
When we're starting to get the technique going we can focus on getting the ball closer and closer to the hole and you need to get the feel for distance oon the bunkershots. I thereby recommend to swing a little extra calmly and long with accelleration to build up the correct feel.