Development of Creative Commons licenses

[Alex Chally <alexchally AT comcast.net>]

I accidently posted this to the community listing, I apologize to 
anyone who got this twice.

Is there any clause in the Creative Commons license that allows for the 
commercial use of derivative works?

Example: I create a t-shirt design and license it under the Creative 
Commons license. Someone creates a derivative work, maybe utilizing my 
artwork but changing the text. I would encourage them to sell their 
work, but I would like to retain the sole rights to produce the 
original commercially.

If there is no such clause, how would I go about crafting it?

Thank you for your time
Alex Chally
www.validconclusion.com