Thanks! Been at it for a few years now- its pretty addicitive.
Yeah its very time consuming- mainly in creating the stencil- making sure its sturdy and that it'll replicate the image you want to create. I usually leave a few "bridges" in and then connect the image properly by colouring in those small gaps with a sharpie.
I enjoy the challenge of getting the image I want right away with just the stencil, it in turn has an effect on the design of the image but constraints create styles. However I have been known to touch up small spots with a sharpie too, if a black layer has flaked off a little