In the video above, you will see how this woman uses several techniques of stroking. The main one she uses is the “Up-Only” stroke. Notice how she starts at the base of his cock and lets her hand slide up (barely even touching him) and then returns to the bottom without sliding down. This is an interesting technique because, I have discovered, many men can't get what they need to ejaculate... The “Down” stroke!
I have found, over the years, that by giving a guy only up-strokes, he seems to be able to hold the edge longer than if he gets a down-stroke along with it. If you think about it, it's like he is only “pulling out” and never “pushing in.” He needs to feel that push to help him over the edge. Since we don't want him going over the edge, this is a great stroke to use. You can pause at any time for however long you think you need to before continuing.
Another method of creating ruined orgasms is what I call the “Ball Tug” method. I don't have a video example for you, but there are some out there. What you do is take his balls in your hand and firmly tug them in a downward direction, never touching his cock at all. Though this method you can produce a full orgasm, it has been my experience that if you either let go at the right time, or squeeze his balls tightly at the last moment, his orgasm will be ruined. Of course, the object here is to stop BEFORE he gets that close.
It really doesn't matter what method you use as long as you stop and allow him a moment to rest before he reaches orgasm. The nice part is, no matter how early you stop, you have successfully teased him and did not push him over the edge. The really fun part of edging is the frustration you are causing your partner. Believe me, he will love it even if he doesn't really get that close to the edge. This is true tease and denial.