Try doing it for yourself and approach the 'Focus' style shops.
They'll often take local artist's cards and display them alongside the larger company-produced ones.
And you don't have to make a print run of thousands - do a limited run for Christmas 2011 and see what cash/feedback you get.
If it works, best of luck. If not, you can still sell the images to the card companies.
(,
Mon 25 Jul 2011, 11:41,
archived)
They'll often take local artist's cards and display them alongside the larger company-produced ones.
And you don't have to make a print run of thousands - do a limited run for Christmas 2011 and see what cash/feedback you get.
If it works, best of luck. If not, you can still sell the images to the card companies.