Creating sitemap is very simple and this sitemap works for both self-hosted Blogger blogs and normal Blogger blogs.
Login to your Blogger blog and go to dashboard >> settings >> search preferences and edit the custom robots.txt. Enable and paste the following text and click save changes. Make sure to change your blog name in Blogger sitemap below.
So whenever search engines crawls your site they will access your Blogger sitemap from robots.txt file.
ogin to your Google webmaster tools and select you website. In your site dashboard click sitemaps below. Now click add/test sitemaps, add your sitemap (just the atom.xml?redirect=false&start-index=1&max-results=500) and submit your sitemap.
Thatís it you have successfully submitted your sitemap in Google webmaster tools. Now itís ready for crawling and indexing. You can find the number of pages crawled and indexed in Google webmaster tools.