How about having model do this with a full bladder,and fobidden to pee without permission from you on pain of caning ,it would be fun to see them squirming to not pee.
At end of shoot have then pee for all to see humiliation if they have not already lost control.Its always good to see them lose control of thier bladder.
When will we see women with Pubic hair lots of it Some variety from antiseptic ones for a change.
Also it would be nice to have a sub go under the cane with a full bladder on pain of more severe caning she is not to piss wihout permission from mistress, at the end when she pees what a sight. Ah well just wishing I am sure others love this too.