Here are the steps for doing an "infinity" style knot with a 90. You can also use a maxi twilly or a maxi twilly cut too with an extra wrap around the neck.
Bias fold and put center at back of neck
ends are in front, and cross them over each other
then wrap them around each other and take ends around to the back
tie and it looks like this
And worn:

Bias fold and put center at back of neck

ends are in front, and cross them over each other

then wrap them around each other and take ends around to the back

tie and it looks like this

And worn:
