I'm not the most experienced player in general, but I am a pretty experienced jungler- I lane maybe one in twenty games (call me narrow-minded, but it's what I do).
One of the things I'd really like to get across is this: With Shaco, you really want to try not to take kills. I mean that. Keep in mind your late game is pretty bad because you're a melee assassin, and you're squishy. You aren't exactly a support jungler, but you should always be thinking about who needs kills more.
As MuhGeeSher said, he's amazing at backdooring because you simply can't catch him. Do let your team know, though.
And COUNTERJUNGLE. The enemy jungler's life during the laning phase should be an utter nightmare.