One of my very favorite books is Book of a Thousand Days by Shannon Hale. It's about a ladies' maid who gets locked, with her lady, in a tower for seven years. In one of my favorite parts, the maid decides to teach her lady how to cook. The rest goes like this:
She said, "I don't know how, Dashti."
"That's why I'll teach you."
"I'll do it wrong."
"Of course you will, everyone does wrong when learning something new."
Then she started to cry. "But I'll do it wrong."
Confession: I hate getting things wrong. I like to be good at things, and if I'm not good at them almost right away, I quit. This tendency has kept me from many experiences that would have been very good for me. So, I am working on overcoming this. I am currently in Massage Therapy school. I have loved it so far, but I had my first major check the other day. I was practicing on my hubby's shoulders, and I twisted his head to the side a little too fast and gave him a cramp in one muscle. I felt the all-too-familiar despair (maybe I can't do this after all, what if I screw up like that for real? etc). I refuse to give in to those thoughts this time. I will try again, I will learn, and I will get better.
Everyone does wrong when trying something new. Don't be afraid of being wrong. The only way to fail is to not try at all.