Submitting sitemap to Google is very important because it informs Google about the content of your website or blog. So if you want website traffic from Google then submit it today. After the change of the new blogger interface most of the people cannot create an RSS feed and they also cannot submit their blogs’ sitemap to Google.
At first go to the Google webmaster tools and click on “Crawl” tab. Now click on “Sitemap” put “feeds/posts/default” on the the form and test it if everything is perfect then return back and enter again and hit the “Submit sitemap” button.