Blackmale may not be the way you want to go since it is, in the end, a crime.

You may be more interested in getting your slave to agree to certain relationship rules, orally at first, and then in writing. This will help to line out the domme/slave relationship. You also might take pictures of your slave being obedient in several situations, letting him/her know it is part of your requirements for the relationship.

In the end, this accomplishes the same thing, but you have put your slave in the position of agreeing to it, thereby avoiding charges of a crime.

Sounds like your slave is lucky to have such a caring Mistress. Wish i had such a situation.

best of luck,
ct