Maybe not fancy but you can produce sum pretty cool stuff with a simple cutter and a little imagination. May be too much work to sell but it makes your own stuff unique and it's kinda fun ... ya can stack colors for outlines & backgrounds if ya use registration marks to make it easy to line'm up ... I use little dots like on the 2nd sticker below.
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I've used an air brush or rattle can to add a little accent ... just needs to be good paint that sticks to vinyl better than the transfer tape sticks to the paint
Here's sum stuff I made for my Blaster with an old Roland cutter using yellow & chrome vinyl with a little dusting from a rattle can of red Fusion paint. Adds a little challenge to a sticker project
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http://www.blasterforum.com/body-work-131/retro-graphics-32435/
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C'mon folks, put this guy to work!