SOME EXPLOSIVE THOUGHTS !!
I believe the principles of good sand play are pretty much the same for everyone. If you want to hit the ball higher, there's no arguing that you must either open the club-face or position the ball farther forward in your stance to increase your launch angle. I mean, there's no other sound way to obtain more height on the shot.
There are other principles that have more to do with strategy and club selection than with physics and swing mechanics. Every amateur (high handicappers especially) should obey the following rules at all times.
From fairway bunkers, forget about using any club longer than a 4-iron unless the sand is moist and packed, with the ball perched in a perfect lie.
Another fairway bunker tip: Take at least one club more than you would from grass at the same distance.
The longer the shot, the lighter you should hold the club. That increases your ability to generate speed, and speed is necessary on every shot from sand.
If your lie is even a little dicey, position the ball at least an inch farther back in your stance than you would from a perfect lie. If the lie is bad, play it back even farther.
From greenside bunkers, aim for the top of the flagstick - most misses from sand come up short rather than long, so give yourself the benefit of the doubt.
TIGER WOODS