How To Write A Project Proposal For Non Profit Organization . Grant proposal writing for all organizations funding can be an issue. It’s not going to be easy. Grant Proposal Template For Non Profit shatterlion.info from shatterlion.info This public proposal responds to our public rfp. As a proposal writer, you must sell a potential funder on the value of your organization and the value of your proposed project or program. Proposal writing involves “selling” your organization to a potential funder.