There are actually some great poses that you can teach subs IRL that will fit this situation and would make good moves for the sub in the collaring ceremony. It would also make the collaring ceremony multipurpose as an obedience trainer as well.
I really intended the accessories to be part of the clothing, not really a pose but here are the options as I see them.
All these are open moves, meaning that the sub is not bound at any time. Each pose/move is usually accompanied by a command given by the Dominant
1) Inspection: Standing upright with their hands behind their head feet spread should width apart. Head up, and chest out. No slouching.
2) Kneel: Kneeling with their arms behind their back, palms on their elbows. Thier butt is on their ankles and their knees spread wide apart so their genitals are exposed
3) Down face up/down: The sub lays on the floor either face up(on their back) or face down (on their stomach) with their arms at their sides and their legs spread
4) Beg: The sub kneels with their butt on their ankles, knees spread apart, then leans forward so their face is on or near the floor and their hands are extended out in front of them one hand on top top of the other (A sub is usually commanded to assume this position before making a request of their Dom/Domme)
5) Crawl: The sub will get on all fours and will follow the Dominant in this position (sometimes on a leash)
6)Bend over: The sub will go from the inspection position to bent over with their hands on their ankles
7)Come/Follow: The sub will crawl/walk to where the Dominant has instructed
8)At my feet: The sub will kneel down at the feet of the Dominant and sit at their feet as close as possible until instructed to do otherwise
9) Collar: male subs and female subs with short hair will go from the kneel position to placing their hands above their head one hand on top of the other, with the head slightly bent forward to give easy access to the back of the neck so the collar can be buckled/locked. female subs and male subs with long hair will do mostly the same except they will hold their hair up over their head.