I wanted a portrait of a Vietnamese woman, but none of the street vendors spoke English. I’d approach one of them, buy a little something (usually a pineapple or baguette) and then use some pointing and smiling — my own sign language — to ask if I could take their picture. It took a couple of tries before this woman agreed to a photo — I ate a lot of pineapple that day. If someone declines your request, thank the person politely and be on your way. You never know who’ll come along next on your travels to give you that perfect portrait.