IIm probably gonna get lectures on all the heath risks, but oh well..I learned years ago that I can only deepthroat a cock when im slightly drunk. Not sure the reason, probably something about deadening the nerves. But it works for us so....
I'm not trying to be facetious here, but I would suggest you attempt it on yourself with a dildo or long object (zucchini, hot dog etc). This way you would know the sensation and how to correct any obstacles so you can coach your submissive.
They always say to experiencing something new on yourself first.
Ohhhhhh, you're just bad...............I read that and looked over at your photo and you're smile looked more like a smirk...I seen that wicked little chuckle under the breathe thing you did.