It's probably time for you to update your LinkedIn profile to reflect your most recent work history and achievements. If you wait until you're looking for a new job, it's unfortunately too late. Plus, how will everyone know how awesome you are unless you tell them?
Your LinkedIn profile is probably better than most, but it's still missing some key pieces. You're great, and it's time to have your LinkedIn profile accurately represent you! Make sure to highlight your skills, and to update your LinkedIn frequently.