Examples shut mouth in Czech examples

How do I translate shut mouth into Czech?

Simple sentences

I told you to keep your mouth shut.

Řekl jsem ti, abys byl zticha.

If you don't have anything nice to say, keep your mouth shut.

Jestli nechcete říct nic hezkého, mlčte.

Movie subtitles

Shut your mouth. I'm going to kill you.

Drž hubu, dědku.

You keep your mouth shut!

Ty drž hubu!