How to make your own geofilters on Snapchat

If you've used Snapchat then you're probably familiar with the app's geofilters, the illustrations you can overlay on top of your photos and videos.  Earlier this year, Snapchat expanded the ability to make these illustrations to all users with a feature that enables anyone to pay for custom geofilters. Unlike the app's other location-based filters for neighborhoods or cities, which may stay at a specific location indefinitely, on-demand geofilters expire after a preset period of time.