I don't think you're getting this.
Do you not see how perfect my legs are?? Do I need to remove my stockings so you can fully appreciate them?
I don't see what's so difficult. When I say edge, you get to the very brink of cumming.
Your cock should leak a single drop of pre-cum every time. I want to see your dick weeping with frustration.
If you don't leak, you haven't edged.
Now try it again. Edge now, and I want you to leak this time!