We don't currently have a label preview feature. On the Buy Label page, hover your mouse over the name to quickly double check that everything looks good. The pro tip is that right before you click the BUY button, you can put your mouse cursor over the person's name at the top of the page, and it will show you the validated address just the same way as USPS will put it on the label.
You can also hover your mouse over the Ship From Name and the Package Type to get more detail:
Arrrr!! Happy shippin' matey!