Put pen to paper verb phrase
The verb "put" can be replaced by "set".
To start writing something
He finally put pen to paper after 3 weeks of delay.
Why don't you put pen to paper? You may create something worth reading for people.
Yesterday, he put pen to paper and replied to all letters from his fans.
To sign a contract
I believe they will put pen to paper when the terms are satisfactory.
The verb "put" should be conjugated to its tense.
This phrase emphasize that Christmas takes place once a year time, so you should grab this chance to indulge yourself and be good to others.
I've eaten a little more than usual as today is Christmas and Christmas comes but once a year, right?