In my experience, very little honest expression is done without anxiety or embarrassment. Confidence comes at the cost of long periods of practice and experience, and even that can be undermined. I've had several friends who struggle with anxiety, and I've come face to face with it at various times myself, so I know it's not an easy thing to work past.

I've struggled a long time with how to express myself, at times wanting to explore things in metaphors and turns of phrase that try to capture people's attention and make them think. At other times I've tried to illustrate thoughts or concepts visually, but more often I've simply 'drawn stuff' without a particular purpose in mind.

Recently I've wanted to express my thoughts directly to try and discover a more purposeful way to spend my time. I'm not nervous about sharing so much as I am uncertain, but that's a part of honesty too. Being anxious just means you understand that outcomes are uncertain.

All that said, expect some metaphors, as to me reality is as much about what happens in my mind as outside of it. I find the world of daydreams and thoughtful feelings is best understood through metaphors.