Actually you don't have to limit each design to one style of shirt/mug/etc. Basically, you have to set up what are essentially sub-stores for each design. It takes a bit of time to set up, tho.
Hope that makes sense - I'm typing it when I'm really too tired and should be in bed. ;)
(no subject)
Date: 2006-07-31 07:35 am (UTC)Hope that makes sense - I'm typing it when I'm really too tired and should be in bed. ;)
--Zhora