Biking for transportation does not require a lot of skill. But when you're off your bike there's a lot of little difficulties that can add up to a lot of frustration. Just walking your bike can (literally) be a pain until you get the hang of it.
Thanks to Melissa from Bike Pretty for modelling this technique for walking your bike!
Stand with your bike on your right and position yourself about halfway between the seat and the handlebars. You will be standing on the opposite side of the chain which will help prevent accidentally greasing up your snazzy new fashion pants.
Grab the part of your bike that your handlebars attach to (the stem) with your right hand. You will use this hand to control your bike while you're walking.
Make sure to keep about 2 feet between you and your bike. This will prevent any shin damage caused by your bike's pedals.
I'm going to assume that the only reason you're walking your bike is because the friend you're walking with has not yet discovered the bliss of two-wheeled, human powered transportation. Instead of practicing your walking, why not just convert your friend!