1. Go to Widgets or go to https://live.liqvid.io/widgets
2. Find the Poster my wall widget and click on the Use Widget button
3. Select the required template and create your own posters
4. Export your template to the device you are creating the poster from
To publish media, use the instructions at https://help.liqvid.io/en/articles/6502715-how-to-publish-media
Tip: you can also add newly created content to a playlist after you've added the widget to your Liqvid account.
To do this, go to Scheduling > click Add Playlist > select Add Media from your library > you grab the widget you created that you want to add > add it to your playlist.