The lesson
Demo a new feature by filling in its actual form on screen, with nothing else competing for attention.
The demo centers on a dark Slack modal titled 'Bug report', with a 'Support Engineering' label over a dropdown set to 'Bug report', a Title field reading 'Data export not working', and an empty 'Add some details...' box. Cancel and a green Submit sit at the bottom. The video turns a Slack message into a Linear issue.
Don't copy the dark Slack setup, which is specific to this integration. Keep the single-problem scope and the real form filled with a believable example.