The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Ask her to do the TISSUE thing,
do it, ask her.
The Big Bang Theory Season 9, Episode 14

No TISSUE damage whatsoever.
The Big Bang Theory Season 3, Episode 3

Push me again and I will slit
your TISSUE open from top to bottom.
Money Heist Season 3, Episode 7

Oh! A TISSUE! A TISSUE!
The Big Bang Theory Season 5, Episode 23

Um, did you know I have a microscope slide
with a little bit of TISSUE
The Big Bang Theory Season 9, Episode 19