Thumbnails serve as the first impression of your video and can significantly impact your click-through rates. To create an effective thumbnail, consider using bold, vibrant colours and clear, high-resolution images that catch the viewer’s eye. Including text overlays with concise, attention-grabbing phrases can also help convey the video’s value at a glance. It’s essential to ensure that your thumbnail accurately represents the content of your video, as misleading viewers can lead to higher drop-off rates and damage your credibility.