Superior Puts Me on Edge and I Can't Deal

Dear Experts, I just started my first job out of college about a month ago in a small office. I have one superior with whom I've been primarily working. I don't know what it is, but something about her just puts me on edge and makes me feel borderline incompetent. I keep messing up little, simple things I used to be good/fine at and obsessively double checking things more than I normally would and somehow still finding errors. I know I need to talk to her, but any tips? Here is how our T.A.P. experts answered this question:Q#341 Ask to meet w/boss & express concern over not feeling like you are meeting her expectations - don't wait! (@jtodonnell) Q#341 Ask 4 clarity re boss's stds, how she prefers 2 work w/you, communicate. Alwys carry pad/pen & use it. (@juliaerickson) Q#341 You should be honest and open, but also be sure that you have concrete examples of what puts you on edge. (@gradversity) Our Twitter Advice Project (T.A.P.) is no longer an active campaign. To find an answer to the above question, please use the "Search" box in the right-hand column of this website.