From now on

Starting from the present moment continuing in future possibly forever

You can use this phrase in ………… language.

 Spoken
Written
Informal

Example 1
You can’t show up here unannounced! From now on, I expect you to call me first.

Example 2
“I’m so sorry for dirtying the floor.”
“Don’t worry about it, but, from now on, leave your shoes on the porch.”