Maybe you and your potential sub could have a brainstorming session before the fantasy is played out? Just a suggestion.

Another suggestion for the future, though. I've been roleplaying on the AOL community for many years and I know from experience that once two people with kinky thoughts get together the results can be a great time. However, it's pretty irritating when someone IMs wanting to roleplay yet is bereft of any ideas, i.e. in the following example:

Someone: Hi, want to rp?
Me: Sure, what do you have in mind?
Someone: I'm dom you're sub.
Me: Okay...what's the scenario?
Someone: Huh?
Me: Where's it set? Who are the characters? How do they end up in a D/s relationship?
Someone: You decide.
Me: ... *clicks the little X*

Roleplaying takes creativity from all parties involved, but it's sort of an unspoken rule of etiquette to come prepared with an idea. For example, if you said something like, "I'm interested in roleplaying a father/daughter fantasy. The daughter has been disobedient one too many times and the father intends to punish her by treating her like a whore, breaking her virginity, perhaps applying pain in the form of whipping...etc etc." Even that isn't too detailed, but it is a solid idea that gives your potential sub an idea of your preferences. It also describes a scenario that is probably quite appealing to more than one member on this forum, something like that would likely have gotten response. Granted I haven't been on this forum long, but I am a roleplaying veteran so I more or less know the ropes.

Hope this all helps.