Do the stenciling paint cans require special nozzles to be used?
There are some types of paints that do require a special nozzle be used to paint downwards (at the street). However, you should be able to find ‘finger-friendly’ paint cans that are designed to be used nozzle down. Watershed Education Resource Centers (that often loan paints, dustpans and brushes along with stencils) use such paints as Sherwin Williams Sherliner, which is a striping paint designed to be used nozzle down.