Nice Tzittzit!
Jewish interpretation is that you only need to do it on garments that have only 4 corners - ie are rectangular.
For everyday use, orthodox Jews often wear a rectangular undergarment with a hole for the head with tzittzit attached.
There is another more ornate rectangular garment with tzittzit called a "tallit" for wearing over clothes in synagogue or other religious occasions.
Thank you! I don't own a tallit, my understanding is that it's used while praying.