Step 1. Request the swipe file; Step 2. Fill out the request form; Step 3. Select 'Use Template for New Design'; Step 4. Sign in to your Canva account (or create a new one -- there is a free option); Step 5. Design a new custom banner for your profile by editing the template. 

💁🏻‍♀️ Pro Tip: I'm guessing that most people will interact with your profile on either the web or mobile, so I recommend making sure any text or images you include are bright enough to be visible across all 3 platforms (web, mobile, app).