Creating top down flat design illustrations in Canva for Social Media Posts and Video Thumbnails. Discover how to create the prevalent top down flat design images that are on social media posts, blog posts, video thumbnails and more! This course is designed to assist you in learning the basics of top down flat design in Canva for use in social media and video. During this course you’ll create create a coffee cup. a stack of memos, and a cell phone with additional examples provided to get you started.