Step one
First CNAME > Edit Name, Label or Host or whatever it says edit it > Enter “www”
Then in the link Destination, Target or Points To edit it > Enter “ghs.google.com”
Second CNAME > Edit Name, Label or Host or whatever it says edit it > Enter the label you got from blogspot.
Then in the link Destination, Target or Points To edit it > Enter the destination address.
Save Changes.
After four hours you will get a notification from domain registrar that your domain Cname is changed and now pointing to another website.