Not sure if this is the best place to ask this question (and if so, please point me to a better listserv), but is there anything "wrong" RFC or best practice wise with pointing a CNAME record to a DNS server?

 

(I'm using EveryDNS.net, and I'd like to make my CNAME records ns1->4.myDomain.com correspond to ns1->ns4.EveryDNS.net.)