Try out one of our Spectacles templates, or start a new project in Lens Studio. If you are starting a new project, go to Project Info and toggle on Spectacles 3 in the Lens is Made For section. Then, click Apply. In your Preview Panel, toggle on the Spectacles 3 button to enable videos for Spectacles 3. Select a video or photo under the Spectacles section.
For the best results, we recommend testing out your Lens on a variety of preview videos, to see how it interacts with a variety of camera paths.