We would not recommend using spray paints with stencils because spray paints are not viscous enough to get sharp imprints.
We recommend usage of Asian Paints Royale paints which are washable. It finally depends upon the type of paint that you will be using.
We would recommend using Asian Paints Smartcare Multipurpose Roller 700
Here are the steps to apply a stencil.
1. Base Preparation
After Plaster & Cleaning, Dent Filling & Primer (DECOPRIME CEMENT PRIMER (ST) / DECOPRIME CEMENT PRIMER (WT)) application, apply 2 coat of PREMIUM EMULSION as a basecoat
2. Stencil Application
Place the stencil on the desired area using masking tape and apply 2 coats of Emulsion on the stencil
3. Finishing Step
Fine tune the Stencils design using 0.5 in./1 in./2in. brush