On the path to cumming from anal!

My mistress and I just decided that the next time I get to cum, it has to be from anal. I'm super excited!

I've been milked before but not had a full blown orgasm. It felt pretty good. I also have only been locked up for short periods of time, but starting now, I'll be locked up until I've completed my task.

My target is about a week, and I've already been abstaining from orgasms. But here's to a whole lot of fun in the future.

Anybody have any advice for trying this for the first time? Or any favorite toys I should try?