With a 90cm scarf, you need to work with a bias folded scarf to have enough length to do a Tods/Weave knot but after that, the instructions are the same.
1- center, wrap and ends to front
2- tuck one end down through the center so it comes out the bottom
3- "Weave" the other tail so it comes out between the 2 parts on the other side
4- pull to tighten and clean it up, and here's where you have to make some adjustments for a 90.
5: just pulling the ends is not enough to keep it in place, because they are short and the silk is slippery, so just half knot the ends to secure them:
6- Or, full knot to really be secure (you can tuck the knot up in the folds like I did or leave it)
1- center, wrap and ends to front
2- tuck one end down through the center so it comes out the bottom
3- "Weave" the other tail so it comes out between the 2 parts on the other side
4- pull to tighten and clean it up, and here's where you have to make some adjustments for a 90.
5: just pulling the ends is not enough to keep it in place, because they are short and the silk is slippery, so just half knot the ends to secure them:
6- Or, full knot to really be secure (you can tuck the knot up in the folds like I did or leave it)