Thankfully, cards and end screens are as easy to add as annotations. Cards are small, rectangular notifications that appear in the top right-hand corner of both desktop and mobile screens. You can include up to five cards per video, but if you’re including multiple cards, be sure to space them out evenly to give viewers time to take the desired action.
Channel description: Your description should provide more information on your company and explain what type of video content you plan on sharing. Search engines look at your description when determining how to rank your profile, so incorporate relevant keywords in your overview. We’ll talk more about how to optimize specific video descriptions below.