1.Log in to your dashboard--> layout- -> Edit HTML
2.Click on "Expand Widget Templates"
3.Scroll down to where you see this:
<span class='post-author vcard'>
<b:if cond='data:top.showAuthor'>
<data:top.authorLabel/>
<span class='fn'><data:post.author/></span>
</b:if>
</span>
4.CUT above code and paste it just after,
<div class='post-header-line-1'/>
or
just before,
<data:post.body/>
5.Click on "Save Templates" and refresh your site.
File Under : change template, html, post, title