you are gonna have to get used to it, when you are confident and open up to do things, you will make errors, when you try new things it is inevitable (Einstein even said "one who never has made mistakes, has never tried anything new") i did very recently and the best way to correct your error is to slow down your paraniod thoughts and not linger on the fumble too much, if you do think too much you will become a nervous perfectionist and im sure you understand what THAT means
watch the original pink panther films, you'll laugh your ass off cos Clouseau (main character) is a fumbler and very clumsy, also at first sight he seems incredibly stupid which in fact is a contradiction, im very sure the character has aspergers and im sure you will enjoy this Film series i reckon is the best!