It's a difficult position. It's far easier to act more aggressively than usual, to pretend or imagine you are dominating your partner... because it is the active role if you will.... and much much harder to remain passive and play a submissive role... because there is nothing to prod your vanilla partner forward.

So perhaps imagine your dominant isn't actually the person using you. He is the unwitting participant in your humiliation... you were told to go out and fuck the first serviceman who visited your home. Oh my... it's the electrician. And you have to make him think he's irresistable while your dom watches your slutty performance on your webcam.

In other words, it will be easier for you to imagine scenes with an offscreen dominant forcing you to perform than an onscreen dominant who "doesn't".