What's the "proper" (historical?) way to wear a Jacobite style blue bonnet? Square on the head but pulled over the right ear? Tilted and pulled over the ear? or Square on the head with no shaping of the bonnet itself?

I have a white cockade that will be mounted over the left temple, so if that makes a difference....

I realize that the blue bonnet was probably worn all kinds of different ways but what I'm seeking is a recognizable "look" appropriate to the bonnet and, perhaps but not rigidly, to the period.