All putts are not created equal!
The longer and more breaking and sloped the putt the more reading-homework you will need to do for a successful putt. If the putt is short with not a lot of break, determine the line and speed (your intention) walk in and execute – apply your intention.
Pressure: when the pressure is mounting, resist taking too little or too much time, stick to your routine and stay focused on the things that make you putt well.
And on fast and or breaking or long putts, respect them, do your homework and putt the ball so the ball creeps up on the hole!