Only I didn't do this with stencils. I did it with stamps and masks, which I already have. Recently, I was admiring the lovely stencil work done in journals, and was contemplating the acquisition of some stencils. They aren't horribly expensive, but another storage problem I DO NOT NEED. Then I thought "Wait a minute, can't I do this with stamps? And I have lots of those."
Right about now, you may have some questions, such as:
What's the difference between a mask and a stencil?
A mask covers an area so you can apply colour around it. See the bird in the tree on the left side of this journal page?
With a stencil, you apply the colour inside the cut out area. So a stencil is a positive image and a mask is a negative image.
Are stamps positive or negative images?
They can be either, but usually they are positive images.