There are heaps of ways to tie long rectangular scarves, many are more suited to winter weight scarves. These days there are so many huge summer weight rectangular scarves but tying them can prove kind of tricky. This way of tying works well with a larger scarf that you may find overwhelms your frame a little as you can tie it tighter or loser. Not ideal for a really hot day but good for spring and autumn when it’s not too hot!
Loop the scarf around your neck once and then taking two of the corners, one from each tail, tie them together (like in the first step of tying your shoelace- over and under way).
Pull the two tails half-way up to your neck.
Then grab the entire scarf in one hand and the knot and the scarf that is around your neck with the other hand and twist it all 90 degrees so that the knot now sits on your shoulder with one tail behind and one in front.
Adjust to suit.