I’m going through the same thing at the moment. When I block my face gets really distorted and my eyes sometimes rapidly blink and it isn’t a pretty sight lol. I also experience that out of body dissociation feeling and I always feel like I’ve been blocking for so long even when it hadn’t been that long. I’m still on my journey of self acceptance, and I find that when I know what I want to say beforehand and speak slightly slower than usual it helps ! It’s a struggle but we’ll get through it :)