Hitting Straight

I find it difficult to see how I'm swinging the club. I'm not sure if I'm swinging in-to-out or out-to-in etc. In the past I've tried to keep the club head going straight towards the ball and through for as long as possible.

Tie something akin to a kite tail (like bright tape) on and then you can see for yourself.
 
Just to let you know I am now hitting my drives nice and straight. I was coming from out to in, but have now sorted it out. Loving my drives! ;)
 
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