This is the critical part of a resume . Quantify or qualify whenever possible to clarify what you achieved. Experience does not mean employment. Use action verbs and an active tense. Don't dilute your message with unnecessary words.
Dates can be in the left margin, off to the right or contained within the description.
Select headings that best fit your background and market you to your intended field. Add the second page after ten years of experience. Education Experience Hobbies and interests are always optional . Font size, generally 12. Avoid Courier - it looks like a typewriter.