I've included a list of links to example t-shirts and ODB images for the designer to use. If ODB could be drawn in a similar way, it would really be cool.
Ideally, only ODB's head/face, shoulders and outstretched arm (holding the can of worms) appears in the shirt. I'd like his crazy hair to be captured. No hat. If he could be wearing a non-descript track jacket that would be cool. No full body drawings.
An alternative to the head/face, shoulders and arm might be to just have ODB's face, and then the can of worms next to it. Perhaps the designers could do multiple drafts.
The can of worms should be open and say "Worms" in an old timey font on the side. There should also be some worms coming out of the top. ODB should be smiling in a crazy way - like he does in some of the example photos.
The caption can be in any solid, no-frills font and should appear centered, directly under the image.
The image should be in one color - black.