a stranger to succumb to your portraiture efforts.
Look for an interesting person when you're out in the market, strolling through town, visiting friends, attending an event, etc.
This should hopefully be someone you've never met before.
You can always tell them it's for a "project" you're working on or that you're putting together a portfolio. You'll be surprised at how easy it can be and maybe you'll even make someone 'smile'.
Who's in for this one?
NOTE: I'm disqualifying myself from this one because I do it all the time.
PS:...I'll post some anyway.
