1 word of warning with a quote sheet, if you write it all down the customer will nicely take it off you and say thankyou and think about it, if you tell them the price and then look them in the eye they will make a decision there and then.
I used the NCCA one when I was a member and the amount of times people did that to me, I one day forgot the form and found my close was far better.
Ask yourself if that is what you would do if a tradesman came to your home?
Shaun