A friend wanted a few tips on calligraphy recently so I got out my pens and googled "calligraphy envelopes." Oh my, the eye candy! Once I started I couldn't stop, it was so much fun!
It all boils down to a little time here and there for practice, practice, practice. And, if you don't have time to do that, just practice when you are writing things you have to write: to-do lists, addressing envelopes, menus, birthday cards. Adding a little beauty to someone's day is fun!
Here is the site I recommended to my friend: