Apex domains cannot have CNAME records.
Question and response
Question
dig michellehill.org. NS
Answer
michellehill.org. 5 NS ns-743.awsdns-28.net.
michellehill.org. 5 NS ns-673.awsdns-20.net.
michellehill.org. 5 NS ns-1424.awsdns-50.org.
michellehill.org. 5 NS ns-1191.awsdns-20.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0