Do you punish the wrong choice

I like to film things the first try so I can show clients that training isn’t a highlight reel but also how I try to help my dogs to learn new pictures. Dante isn’t grabbing the tug at the end when I want him to run past it because he’s disobedient. He doesn’t know he’s not suppose to. It’s my job to show him and this is about the harshest I’ll be with my dogs. I guess what I want my people to see is that the dog will try to do what we request if we can show them what we want. It’s very common for trainers to put the e collar on and correct the mistake. That’s not my way. My dogs are never scared to make a mistake. The only living being that I’m concerned with liking how I train is the one with four legs, and no keyboard