Penulis 
1. Click Template -> Edit HTML
2. Copy and paste the following code
<!--START ALKHOIROT.NET FB CUSTOM CODE-->
<meta property='og:url' expr:content='data:blog.canonicalUrl'/>
<meta property='og:title' expr:content='data:blog.pageTitle'/>
<meta property='og:site_name' expr:content='data:blog.title'/>
<b:if cond='data:blog.pageType == "item"'>
<title><data:blog.pageName/> | <data:blog.title/></title>
<meta property='og:image' expr:content='data:blog.postImageUrl'/>
<meta property='og:type' content='article'/>
<b:else/>
<title><data:blog.pageTitle/> </title>
<meta property='og:image' content=' your image link for frontpage is here '/>
<meta property='og:type' content='blog'/>
</b:if>
<b:if cond='data:blog.metaDescription'>
<meta property='og:description' expr:content='data:blog.metaDescription'/>
</b:if>
<!--END ALLKHOIROT.NET CUSTOM FB CODE-->
3. Put the above code right after the <head>
4. Clik Save Template. Done.
Now test your blog using Facebook Open Graph debugger here.
See live example by testing this website: www.alkhoirot.net
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