While I do not know the BEST way to share your Photovoice project, I do know that there are several web sites that host Photovoice specifically and can facilitate ongoing engagement -- including with policy makers and others. A good article summarizing the approach can be found on the Global Journal for Community Psychology Practice at https://www.gjcpp.org/en/article.php?issue=33&article=201. An example web site that I know has been used by local and international Photovoice projects is https://photovoicekit.org/. This resource was specifically designed for the purposes you note.