Types of Stenciling:

There are two types of stencilling, private stencilling and public stencilling. The difference is how careful you are.

Public Stenciling:

Public stencilling normally requires enough speed to get in and get out as quickly as possible. Simply take your stencil, but it on a surface and paint it on, then leave.

Always use flat spray paint, because glossy paints can easily clog more intricate stencils, and are generally sticky.

Patience is a virtue, so allow the paint to dry between applications. If you do a lot of stencilling too quickly, you will get globs on the back of the stencil that will transfer to the surface.

When applying the paint, don’t hold the can too close or you will get globing on the surface that will drip down. Use an even spray approximately 10” away from the surface, and cover the surface evenly. Rushing the application of your stencil will only cause you personal grief later when you look at it. Take the extra second to make sure the image is evenly, and coated completely.

You can use an adhesive glue spray to stick the stencil on the wall, but I find its an extra step that wastes time. As well, with textured surfaces it simply will not hold properly.

I also suggest wearing gloves, because clean hands can mean a clean record in the right circumstances.

Wearing a mask is a catch 22. While it does provide protection for your lungs, it makes you an obvious target. However, for lengthy applications it may be a good idea to wear a mask. No one likes running when they are disoriented. And as always, spray at your own risk! Failure to obey local laws may result in your prosecution, and no one wants that.

Priviate Stenciling:

Private stencilling isn’t as exhilarating, but its safer. Normally private stencils are more intricate, and allow you the time to make sure everything is right.

The key to stencilling is to prevent ‘under spray’ which is what happens when the paint gets underneath the stencil. To prevent under spray, using a spray adhesive is your answer.
The best way to go is to use: 3M™ Spray Mount™ Artist's Adhesive.

It allows for great adhesion, without permanent application.

However, any spray adhesive will work. Spray lightly, wait a few minutes, and apply the stencil to the surface. If you are doing something intricate, you will want to get a brayer, or roller, to roll over the stencil to make your stencil lines as crisp as possible.

If you are working on a canvas it may flex so the stencil lifts off the surface. Stick the stencil on lightly, flip the canvas over, and roll over the back of the canvas to ensure the stencil really sticks.