Painting for a themed exhibit

Normally I paint based upon inspiring things I have seen or places I have visited. I have thousands of photographs I have taken that I combine and morth to recreate a feeling I experienced or a vision that I think will draw others into my work. Lately I have decided to enter some socially themed exhibits and have found this way outside my comfort zone. Instead of starting with inspiration I start with someone elses concept and try to find something I share that fits the theme.

This feels much like being in school trying to answer an assignment; not something that makes the juices flow. Often I abandon the exhibit when nothing comes. Sometimes I can play around with ideas long enough until something that does inspire me finally arrives. Do you have techniques you use for these themed exhibits?

"Celebrate" (shown below) is the final work I created in response to the "Cupcakes for Claudia" exhibit in support of the courageous journeys of those coping with cancer.  The reception for the exhibit will be held on April 16th, from 6:00 - 8:00 pm.