How Do I top. . . well, If I'm asked to top by my partner, then I'd better fucking do what He wants since He is my Dom. In that case I am His service top doing what He wants to fill His needs. If I'm in the mood to find a bottom play partner to practice my skills on, then I just have to suck it up, know it's going to be odd at first cause I am not naturally one to grab someone by the hair and do X,Y,Z to them with out slipping a "are you okay Sir/Lady?" in a few times.
As to the how of it. . . How Do I top? How ever I feel like it that day. How do I, who wants to just enjoy being a sub, flip the switch? ummm, If I pick up on the other person not taking control, I don't like to wait. That's usually how I started topping. Also I tend to start off as the bratty bottom then slip into wicked top. That's just how I do it. Everyone figures out their own ways and what they need to get them there.
~RK~