Nought caught...yet

Street photography can be quite a stressful pastime. Every time I see a nice image, I know there's only a split second before it's gone and the second shot will probably be a poorer version. Add to that the fact that I'm pointing my camera at people who often notice...and sometimes snarl, grimace, or scorn...and you've got a raised heart rate and the need for a wee sit down. I'm not sure I'm confident enough in my skills for it to be an adrenaline rush. Maybe it'll never be...

So I chose this because of the (dads?) snarl. I wonder what he's thinking...?

I would love to hear any of your tips for street photography.