What program do you use?
Really it is trial and error with the fonts... I don't have a ton of the ones that they use, so I try to find things similar.
For the box, there are a number of aproaches you can use, I use a rubber stamp tool (Fireworks) for most instances like this... I would say play around with that, or something similar.
Really, like I said, the key to any of this is just the idea.. the hardest part by far for me.