1. download it ,extract .
2.Open template file in any word editor you have,change the URLs in template file . You need to change url in this section : <div id="header"> ..... </div> . Find and replacehttp://nhamngahanh-gallery.blogspot.com/... with your urls
3.Upload template to blogspot .DoneHow to use :To post your images ,open your blog editor , upload your image .Each post contain only one image ,no more ,so upload one image in each post .Choose edit in HTML mode ,keep only img tag like this :<img src="your image url" title="title of your image - required" />remove other tags and any things else .