UPDATE: Stitches By the Bay has announced that it is closing, effective November 20 2010. I don't know if the web links below will be active after that, so let me summarize what they say. The first link says that "creative consultations" with June at the shop are $65/hour and are by appointment on Thursdays and Fridays. The second link is a form to fill out if you need a consultation but don't live locally. Besides your name and address, the form asks for a description of your project, how you plan to finish it, threads you like and dislike, decorative stitches you would like to avoid, and any special notes such as a deadline for finishing the project. These long distance consultations are $60/hr. and the form says small projects usually only need 1-2 hours of June's time. The contact information is the shop's, not June's. Probably if you wish to contact June for consultations after November 20, you should use the information on her website, which is the third link below. It looks like she will continue her creative consultations as before.
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Stitches By the Bay is June's former shop. She still teaches here now that she is concentrating on teaching and writing, and of course you can buy her great little books from the shop. But the reason I'm mentioning June and Stitches by the Bay is that she does what she calls Creative Consultations for those folks who can't take a local class with her through the shop. This sounds a great deal like a custom stitch guide to me!
http://stitchesbythebay.com/services.html
Here is the direct link to the Creative Consultation form which you fill out to start the process. The cost is $60 an hour, which means it'll cost $60-120 for a small project but at least double that for a complex, large design.
http://stitchesbythebay.com/ConsultationForm.html
June also has her own website, although her books are sold only through shops, not directly. It's a great place to see her latest book and read a bit about it, though. Her email address is june@junemcknight.com if you want to talk to June herself about a custom stitch guide via a consultation.
http://www.junemcknight.com/