I have been underwhelmed by the cut-your-own-stencil-out-of-contact-paper method so far. From the factory, the paint has a bit of overspray on all the edges, providing some diffusion so that the color does not have sharp edges, whereas with the contact paper stencils you get not only sharp edges but also a distinct difference in the height of the paint from one color to the next. It feels like it would be very easy for something to brush against the cabinet and pick up the edge of the color and scratch it off.
Plus, since the edges are sharp you have to be damn sure that your stencil is completely perfect. Any wobbly cuts or slight corners in a curve will be completely visible in your final product.
Multiple light coats is also a REQUIREMENT. If you spray enough for the paint to run at all, it will pool on the edge of the stencil and look bad.
Overall I am not satisfied at all with the result of the stick-on stencil, and am looking into some other options. I'm glad that the $125 laser cut vinyls for Pinbot are out of print, as I think the results with those would have been disappointing as well.