Specialist beauty retailers such as Eyebrowz.com, e.l.f. Cosmetics and NYX Cosmetics sell a range of separate eyebrow stencils and full eyebrow kits. Eyebrowz.com also allows purchasers to create customized kits with a range of stencils for different shaping needs.
As well as kits and stencils to purchase, some beauty sites such as Eleganceandbeautyreviews.com offer free eyebrow stencils with tutorials. These are available as printouts to cut out and use at home. The advantage of paid for kits is that the shapes are exactly correct and the retailer is likely to also carry useful supplies such as eyebrow wax and precision tweezers to complete the job.