My dog is scared of me?

she sees you as the alpha which is good, she thinks that whenever you cross your arms you are showing her how big and strong you are, by hiding from you she is telling you that she knows how big and strong you are and that she is not a threat. the way to stop her doing this is by making her ociate you folding your arms with something good happening, eg. fold your arms and as soon as you do, say "good girl" in a happy friendly voice and give her a treat (hold the treat in your hand so that you can give it to her staright away, if she has to wait for the treat, she won't ociate you folding your arms with the treat). carry this on until she knows that she gets a reward every time you fold your arms and then gradually, make her wait a bit longer for the "good girl" and the treat each time. Good luck and i hope this helps!!