Many larger stencils that work well for wall designs ... You typically want to apply two thin layers of paint over the stenciled design. The base color will likely still show after the first ...

Obviously, the thickness of the stencil has to be at least the minimum layer height of your printer. If you use Eagle, [Robert] has a script to help you, but any Gerber files of the board outline ...

Put your printed stencil on top of a piece of carbon transfer ... use the ribbon tool for wide sections to scrape the top ...

The only problem is you then need a solder stencil. You somehow have to get ... in the process is to export the top and bottom cream layers from your CAD software. The next step is to shrink ...