Clubface not matching lead arm angle

[MikeLowry5]

My clubface points at almost a toe down position in the top of my back swing. Unfortunately I do not have a picture showing it however, you have the visual.

My questions are:
1. Is it imerative to have the clubface match the lead arm angle?
2. What is the determining factor in getting the clubface to match that angle, swing path or grip or other? I use a neutral grip/overlapping.

Thanks,

Mike

[delav]

Is your left wrist very cupped at the top?

[MikeLowry5]

Well I am left handed so it would be my right but, yes it is sometimes slightly cupped. Only very slightly.

[Weezy]

It's not imperative, in fact alot of great ball strikers play/played with the face a little shut or open.