A hashtag is a label for content. It helps others who are interested in a certain topic, quickly find content on that same topic, as hashtags are searchable. The hashtag simply needs to be typed into the caption of your post when posting inside the Academy Facebook Group.
The official Academy hashtags are:
#wip - Use to show what you are working on today
#win - Use when you have any breakthrough, shows, sales or success
#feedback - Use to show that you are open to receiving feedback from the community
#meetup - Use when you are planning an Art2Life meetup
#materials - Use for questions about gels, paints, brushes, etc.
#inspired - Use to share anything inspirational