Working with my coach David Leadbetter I am constantly reminded of the need to create and maintain good body angles at the set-up.
It starts with a firm foundation, my weight is balanced on the balls of my feet, and I gently flex my knees as I bend from the hips to create a comfortable spine angle.

Maintaining height is important, so when you work on your set-up, remind yourself to stand up tall, allowing your arms to hang comfortably.
A note on ball position. I generally only move the ball position to influence the type of trajectory I’m looking for. Otherwise it stays fairly constant (and I use the T-square when I practise to make sure it is).

Should I need to increase the effective loft on the clubface to hit higher shots I simply move the ball a few inches forward (be aware that doing this also tends to encourage left-toright spin); to hit a lower, punchier type of shot, I would play the ball back (which gives you right-to-left spin).

T-Square enables me to monitor the alignment of my stance and the ball posi- tion within it