Answer:
Well, to start off - no one "does" Wicca. Although not recognized by most, Wicca is a religion. No one asks how do you "do" Christianity, or how do you "do" Buddism. Personally, I do not like the term "practice" in reference to a religion. I practice my flute. I practice drawing. But when it comes to religion - I live my religion.
Every day you wake up, you honor your deities, try to be thankful no matter how hard times get and try to make the world a better place one day at a time. This is pretty much a standard in any religion I have studied.
If you are curious about wicca, or other pagan based religions please visit witchvox.com for pretty good up to date information on the whys, hows and whats of the religion. Also good is religioustolerance.org.