I get in my head too much

Me and my s/o have been into some more kinky things lately. And he’s good at it but I feel like I doubt my every move and it’s not pleasing me being in my head.

Like I won’t send him videos of me playing with myself because I’m scared it’s bad¿? I over think it. Help !!

Any advice on how to help get me out the comfort zone would be great !!