http://www.wikihow.com/Write-a-Sestina
This form originates from the songs of troubadours around the 12th Century.It is quite complex with six stanzas of six lines and an ending envoi of three.
The end words of the first stanza must be repeated in different orders in all the other stanzas so clearly those 6 words must be carefully chosen.No doubt reading some sestinas before we begin is a good idea.
How my heart sings 
Beautifully Written… Great Post ❤ http://www.misskymmiee.com
Good to see you venture into these formats….As you probably know, I’ve been here a few times during this past year…. 😉 Hugs!
I shall be reading your work.This one seems harder than the villanelle but maybe I will grasp it eventually! :)xxx
Quite challenging….I have not actually published sestinas here on my blog….. 😉
Oh,ok.Will look online then,:)