I have just changed from pixelsatemyhomework.blogspot.com to the new custom domain that you can see in the URL address above.
Once I had bought the domain name, I directed the www. to the address to which Google required.
Problem
That worked OK but I saw that the non-www version of the site was simply directing to a parked domain at the address of the domain registrar (GoDaddy.com).
I read Google's information on the subject and I read various Question and Answers on lots of forums and they all seemed to think it was impossible to get around this problem or that curing it involved adding a piece of html redirect code in the 'head' section of the blog.
Solution
As I say, I registered this domain with GoDaddy.com and the way I solved the problem was to go into the domain settings at GoDaddy and order the non-www site to forward to www.
It has taken a few hours to propagate and it all seems to be working OK.