Correct Parallel: She learned to write effective business letters and to contact clients. Read your writing through critical eyes, and make sure that each word works toward your larger point. Proper layout, branding, and decent printing or bookbinding give your business plan a professional feel.
Passive Voice: He was impressed with the directorhe was thorough. Otherwise, you might come off as an amateur. The repeated infinite form is more formal and balanced.
See the section on clauses, pages NOTE: If the introductory clause or phrase is short, no comma is necessary. Repurpose If your time has become more focused on small projects rather than tangible growth and building a valuable client list, consider packaging your existing products or services differently.
Then, triple check. In these examples the passive voice is preferred.