Take heed of the fine print: "Note: The maximum size of your custom image is 100 by 100 pixels or 64.0 KB (whichever is smaller)."
You may need to use an image editor (like Paint on Windows) to resize the picture before you upload
Take heed of the fine print: "Note: The maximum size of your custom image is 100 by 100 pixels or 64.0 KB (whichever is smaller)."
You may need to use an image editor (like Paint on Windows) to resize the picture before you upload