Please make yourself comfortable while I get some coffee.

我去冲咖啡，您别拘束。

《牛津词典》

Please make yourself at home and help yourself.

请像在自家一样不要拘束。

youdao

Just make yourself at home.; Please make yourself at home.

在我这儿可别见外。

《新英汉大辞典》

The most important thing is, please remember to vote, and for Pete's sake, if you're one of those undecided voters, would you please get over yourself and make a choice already?

CNN: Jessi Klein's presidential debate blog