This document provides guidance for a "Guided Freewrite" activity to help brainstorm ideas for public service announcement posters. It involves writing responses to a series of prompts about identifying a clear claim or message, target audiences, values and actions that would appeal to those audiences, and potential visual elements for the posters. The goal is to help participants feel confident in developing PSAs by first determining the key elements of claim, call to action, and target audience. Participants are encouraged to spend the allotted time on each prompt and not skimp in order to fully develop their ideas.