I hope you have the metronome open.
http://xxxbunker.com/1948478
watch this video
Set the speed of metronome to 40. After every minute keep on increasing the speed.
Once you reach 100 you will increase the speed as I say i.e 120,160 and 200. If you edge in between pause the video and let the edge fade away. And then continue with the video at the same speed at which you edged.
And don't even think about cum. If you can't control then ruin your orgasm.
And count the number you edge. It will help you on the next page.