I am no expert, but it would seem that direction of rotation would be hard to determine with that small diagram, since you don't know the reference point. Are you supposed to be looking from the back or front of the knot? Is the knot supposed to be upside down with the loop at the top?
I am reminded of sheep herding, where one does not give "right" or "left" commands but clockwise or counterclockwise rotation with the reference point of the dog facing the sheep. (and 'walk up' and 'get out' for towards and away from the sheep) Depending on the position, left to the handler might be clockwise or counterclockwise. If one was looking from the ground upwards, the direction or rotation would be reversed.
Similarily, chirality has to have a x, y, and z axis, and if you are looking from the negative z to the positive z direction, rotation will be opposite from looking from the positive to negative z direction. So you need a reference point. I would think it would be from a directional curve from what has been tied to what additional wraps are being created (in 3D, ordered numbering of points along a curve). I know how it is defined in organic chemistry for four ordered atoms, but I think chirality just would be confusing to someone trying to learn to tie a knot. Why not just define directions from the perspective of the person tying the knot looking downwards?
Here is the same diagram (but reversed based on Mr. Lehman's comment) looked at from the bottom, top, front, and back (I did not change the labels, so they are either all correct or all incorrect). I think this would be confusing.