Dally, How is it that I have so many ideas in my head but...

How is it that I have so many ideas in my head but they will not come out? I can see the image perfectly in my head but when I try to get it down on paper I completely lose my way. I cannot let the fear of failure to continue ruining my plans. I am my own worst critic. I’ve been on edge all day and now I’m a jittery mess because I can’t get this stuff out of my mind.

Worst drawing mind block of my life.