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Heather O'Connor
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My Engagement
Last updated: 7/22/2025
Heather O'Connor
Professional
Profile Link: http://community.the-efa.org/member/Heather-ThreeQuillsEditing
Personal Information
Pennsylvania
United States
  She/Her
  Female
  Master's degree
Professional Information
Copyeditor
Visit Website »
  threequillsediting@gmail.com
  Three Quills Editing
  8
  2
  Hi! I’m Heather, a detail devotee with a Certificate in Copyediting from UC San Diego, an MEd focused on literacy, a BA in Literature, and experience since 2017 editing fiction, business, and academic texts (using Chicago, AP, and house styles). I keep a watchful eye on the big picture when I edit, but I specialize in the details, focusing on accuracy, clarity, and consistency while checking grammar, spelling, punctuation, and much more.

As a former lit major, I have a warm reading nook in my heart for fiction. Some of my favorite genres to edit and read are YA/NA, literary, romance, mystery, historical, and speculative. I also love small businesses and am dedicated to ensuring their messages are clear and effective. I’m available to edit marketing or other materials, in addition to web content.

As your editor, I’m also your ally, a reader who is trained, thorough, and dedicated to helping you. I’ll give your project my all because it matters to you and me, and it will matter to your readers.
  Copyediting, Fact-Checking, Line Editing
  Ecology/Environment, Gardening, Parenting/Family, Women's studies
  Literary, Mystery/Thriller, Romance, Science fiction/Fantasy
  Historical
  Academic Materials, Biographies, Blogs, Creative Nonfiction, Memoirs, Novels, Promotional Materials, Short stories, Websites
  Adult, College, High school, Middle school, New adult, Young adult
  English
  Associated Press (AP), Chicago Manual of Style (CMOS)
  Excel, Google Docs, Google Sheets, InDesign, Word
  Specialized Certificate in Copyediting, UCSD
Additional Information