Arrow-straight elbow and head

[Ronnington]

Hi all,

I've noticed that players like Steve Davis, Hendry, Ronnie, John Higgins, Selby, Robertson and Trump all have nigh-on perfect alignment in their stance and cueing when the tv camera faces them directly - their cueing elbow is perfectly straight and aligned behind their head.

Are there particular pointers with regards to stance or technique which makes this possible? I've read something about pushing your non-cueing shoulder close to your face to help with this?

Thanks