Anticipation VS. Apprehention...

This is really quite an interseting subject.
in my young life as a D, I (we) discovered that a combination of the two works quite well.
For example, I'll prepare a "sceleton" of what I would like to do in a scene. Basically I try to put together a rought structure of what I need, what preperation I want my s to do and a rough scheme of what message I feel like conveying.
After that, and this is where the internet is quite helpful, we exchange a few emails in which I divulge one or the other things that I have planned.. never giving away my whole game though.

After all, I am not simply acting out a play... I am in control! since I can only guess when fantasising how exactly she will react, a good deal of improvisation is called for.

I have always found that over preparing is not really benificial for me.... once I "anticipated" only using my newest toy (not tested at that point) on her and ended up horridly screwing up the evening because I did not know the dynamics of this instrument.. turned out that nothin short of an elephant skin could bear more than 2 full blows from this toy.... and before someone asks, its a kind of highbred flogger... half whip half strap... proves to take very little effort for some serious damage, since then I have mastered the device thoug... But I am drifting off here.

Getting back on track, basically I like giving a certain idea that "something heavy" is going to happen, but I enjoy the surprised/horrified expression when I pull the next 'rabbit out of the hat'... this gives ME the control I need , and as long as its within my 'rough plan' the satisfaction she needs....