2) Copie o url dela
3) E coloque o url da imagem:
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE html>
<html b:version='2' class='v2' expr:dir='data:blog.languageDirection' xmlns='http://www.w3.org/1999/xhtml' xmlns:b='http://www.google.com/2005/gml/b' xmlns:data='http://www.google.com/2005/gml/data' xmlns:expr='http://www.google.com/2005/gml/expr'>
<head>
<meta content='IE=EmulateIE7' http-equiv='X-UA-Compatible'/>
<b:if cond='data:blog.isMobile'>
<meta content='width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0' name='viewport'/>
<b:else/>
<meta content='width=1100' name='viewport'/>
</b:if>
<b:include data='blog' name='all-head-content'/>
<title><data:blog.pageTitle/></title>
<meta expr:content='data:blog.metaDescription' name='description'/>
<b:skin><![CDATA[/*
-----------------------------------------------
Icon Center Style
www.sundesigns.tk
----------------------------------------------- */
body {
font: $(body.font);
color: $(body.text.color);
background: url(''https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgziVdBTlSwAVY1olRlOuwa3TWTqfhXkW9pRsUM29LMm1JQqo5n-Ppl2LcdI5K_shN5o6OqxXNPvUE5yUXiNRmtYSs16kih51g2BC2POSHJdEnwm68N8OPJlwmfs6vK9HqArNBkojyqvYM/s1600/SAFS.png'')fixed top center;
overflow-y:hidden;y:scroll;
}
]]></b:skin>
</head>
<body>
</body></html>
