From the Headliner Mobile App:

Step 1: Open up the project you'd like to share 

Step 2: Open the Headliner Mobile App (Available on the App Store/Google Play).

Step 3: Click "share video" on your exported clip and select Instagram/Snapchat.

From the download page:
Step 1a: Open your exported video via the export email we sent you.

• If your video is under 7MB, the file is attached to this email and you can download it directly to your phone and upload it to Instagram or Snapchat like you normally would!
• If your video is over 7MB, click "Go To Video" in the email and you will be directed to the Download and Share page, which is also accessible on mobile devices

Step 1b: You can also access your exported clip from the Projects page by clicking on the illuminated film icon next to your project

Step 2: Save your video file to a Cloud Storage service such as Google Drive or Dropbox

Step 3: Download the video from the Cloud Service directly onto your phone

Step 4: Share your video on Instagram and Snapchat like you normally would!