You copied and pasted your resume
For all intents and purposes, LinkedIn should be your resume on steroids. You have an opportunity to hyperlink to your work, references, and previous employers. You can highlight big projects you've worked on, and shed some light on what you've achieved. Include certifications, references, all of your education, and anything else that can make your profile more robust.
Bonus: LinkedIn has a built-in Resume Maker that can help adapt your skillfully-made profile into a streamlined resume.