Okay so you've watched each other play with their clit and have probably accidentally touched clits, or perhaps you're particularly naughty and did it on purpose. -smirks-
I think it's now time for you to get comfortable with the body of your fellow sissy. So Sissy A go over to the something that you can bend over, lower that skirt or lift your dress up, drop those panties and prepare your bottom for a spanking. After each spank you must say out loud "Thank you for the spank misstress may I have another?"
Aren't you lucky Sissy B you get to dish out my spankings for me, the benefits of being slightly bigger eh. You are going to give Sissy A 10 hard spanks, 5 on each cheek try and make her squeal if you do it right it should leave a nice red print on her ass cheeks. However after every spank I want you to keep hold of her ass and grope it as if it's the ass of a real woman until she asks for her next spank.
So spank away and do NOT forget the gropes I want you in contact with each others bodies for more than a brief flash.