Psychological Pressure on Opponent

how to put psychological pressure on our opponent in a chess game? 

By doing a little lapdance with your webcam turned on during the game

'I don't believe in psychology, I believe in good moves!' - Fischer

Players put psychological pressure on themselves.

LMAO

By playing good moves

Play good moves and occasionally stare at them. Don't make stupid reactions coz that makes you look like a joker when you can't back it up like Hikaru.

If you have a queen and they have a rook in an endgame with pawns on board then just engage in a rinse-and-repeat non-repetitive checking sequence making sure to always throw in a pawn move , king move, or capture in between to not draw by 50 move rule. I did this many times, it works exceptionally. One time I did it in an endgame where after the opening itself I got a queen v rook with 45 minutes on the clock and pawns on board and as I implemented this technique the opponent was playing bullet with 1 minute on the clock and I still playing 45 min rapid. The OTB game was at Sydney Grammar School in Australia and everyone including some of my classmates at school could hear the near-constant sound of 'check', 'check', and 'check' with gaps in between. Fun fact: That OTB game at Sydney Grammar started with 45 minutes per side on the clock.

This is a classic example of implementing psychological pressure on the opponent. Eventually, the guy got worn down and blundered checkmate.