Shake the can well for at least 3 minutes after hearing the ball. On first use, spray into the air for 3-4 seconds to remove any concentrated paint from the internal tube. Test the spray on a test surface first. Spray the object you want to paint from a distance of 25-30cm. During spraying, move the can steadily parallel to the surface being sprayed. Shake the can regularly. After finishing your work, spray upside down until clean gas comes out to clean the valve. We recommend cleaning the valve with a solvent (Nitro or Acetone) to avoid clogging.