I try to compliment one person per day minimum, anyone, someone in line at Starbucks, the person checking me out at the grocery store, I don’t care if it’s a guy or a girl. It scares me to death usually but it can make that persons day and usually makes mine too. Who cares if you make a fool of yourself, make their day a little surreal. If you notice someone has changed their appearance somehow, chances are they’re self conscience about it, so mention it and say it looks great. Remembering random things people close to you like or things they mention in passing and surprising them with it later is another favourite, it can be something tiny, just to let them know you were paying attention.