The Cross knot, used with thin fabric ties, is smart when finished but is complicated to achieve.
Start with the wide end extending further down on the right. Pass the wide end over the narrow end.
Wrap the wide end under the narrow end.
Pull the wide end over and then underneath the outer layer of the loop around your neck so the seam on the wide end is showing.
Take the wide end and pass it to the opposite side, around the knot.
Pass the wide end up from underneath and behind the knot and through the loop that is formed.
Here the knot takes on its final shape.
Carefully adjust the knot, holding the wide end gently between your thumb and index finger, and pull on the narrow end.
If both ends don't meet perfectly, simply start over and adjust the length of your tie accordingly. Make sure your collar falls nicely all around, and center the knot as best you can.