Being professional means that you produce documents that don’t contain typograsphical or grammar errors. That includes brief ones like posters, blog posts, slides, or other visual aids.
The presidential inauguration poster for Donald J. Trump initially contained an error, as shown above. The first sentence said: “No dream is too big, no challenge is to (sic) great.”
It could have been even worse, with a shredding challenge. Spelling or grammar checking software built into programs like Microsoft Word won’t catch everything. A single-page document from California State University describes 14 Proofreader’s “Tricks” you can use.
Lately Jane Genova hasn’t been proofreading some of her blog posts. I’ve added my corrections in [brackets] to three. She’s one of my favorite sources for bad examples:
The O.J. Simpson Brand – It Can Be Restored (and the controversy will help that) from October 1, 2017:
“On [One] role he can take on is that of imprisoned Watergate lawyer Chuck Colson.”
Stephen Paddock Had Lived in Gun Country - So, What Did We Expect ... from October 2, 2017:
“That could [be] homicide, suicide or both.”ALIVE! -We Woke Up, Had Coffee from October 2, 2017:
“In the days of Queen Victoria, limited medical science and place [palace] intrigue usually meant early deaths.”