I’m participating in a showhouse (yes, another one!) later this month, in New York.  This particular event, the “Holiday House” benefits the Breast Cancer Foundation founded by Evelyn Lauder and is held at the Academy Mansion – an incredible upper east side property that left me speechless upon my first visit.  Auspicious location?  Check.  Worthy charity?  Check.  Client?  Hmm, not so much.  As with all showhouses, that particular detail is missing.  And with no real client, that means I have to invent one so that I have a jumping off point for my design and a concept to fall back on when I’m flooded with options.  Keeping in mind the…