Calling all artistes

I am ghostwriting a blog for a software company.  We have created a fictitious character to be the author of this blog.  So we need a caricature/cartoon of a hip, young telecom consultant to visually identify this make-believe blogger.

Are there any artists on TQC who would like to take a shot at doing this?
Do you know any LJ communities or other sites where I might be able to "crowdsource" such a request?