It easy to create your own icon, just copy/paste the green code below here after <head>
<link href='http://www.blogger.com/favicon.ico' rel='icon' type='image/vnd.microsoft.icon'/>
And then copy/paste the red code below here before </head><link href='http://[Your Link URL]' rel='icon' type='image/vnd.microsoft.icon'>
You must change [Your Link URL] with icon directory that you have uploaded.
It works verywell if you are using Picasa Web (www.picasaweb.google.com).