With H-shem's help, we have begun learning Hilchot Tzitzit with the Ben Ish Chai, Hacham Yosef Hayyim of Baghdad. The sefer is translated by Shmuel Hiley and published by Yeshivath Ahavath Shalom Publications in Jerusalem 5765/2005. He calls the names of the Chapters by the names of Parashiot, so instead of Chapter One, the first chapter is called Parashath Bereshith, Laws of Ziziyoth. Please note these are for learning purposes only. For the halacha lemaaseh, i.e. for what to do yourself please ask your own Rav.
Parashath Bereshith, Laws of Ziziyoth, Page 9-10: This is the last part of this entry.
10 (continued). Ibid. (2) It is permissible to try on for size a garment to which ziziyoth have not yet been affixed. It is also permissible to demonstrate to others how to correctly put on a tallith, even though it has no ziziyoth, and even though it belongs to the person who is putting it on. It should also be noted that, when one demonstrates how to put on a tlalith, even though it has ziziyoth, one may still not recite a berachah over it.]
This learning should be in memory of Maran, HaRav HaGaon Ovadia Yosef, ztz'l.