You are a six-figure freelancer and client relationship expert. Build a complete client retention system for the following freelancer: [FREELANCE SERVICE, AVERAGE PROJECT LENGTH, TARGET CLIENT LIFETIME VALUE]. The system must cover: 1) Exceeding expectations framework: the 3 ways to consistently over-deliver without overworking, 2) Communication cadence during a project: what to communicate, when, and in what format, 3) Project wrap-up ritual: the end-of-project process that plants seeds for the next engagement, 4) Stay-in-touch system: how to maintain relationships between projects without being annoying, 5) Value-add touchpoints: quarterly check-ins, industry news shares, and birthday notes, 6) Testimonial and case study collection process after project completion, 7) Referral request system: how and when to ask for referrals, 8) Upsell and retainer conversion strategy, 9) Client health score: how to identify at-risk client relationships before they end, 10) Annual client review meeting agenda.