Newly created youtube channel needs:
1. Profile pic. It’s recommended to use a picture that’s at least 98 x 98 pixels and 4MB or less. Use a PNG.
2. Banner image. the image that’s at least 2048 x 1152 pixels and 6MB or less. PNG file
3. Video watermark. An image that’s 150 x 150 pixels is recommended. Use a PNG that’s 1MB or less.