What should a freelance installer agreement include?

Six clauses: scope (the exact vehicle and what's excluded), rate structure (a day rate buys 8 hours of bay time), material-failure liability limited to the reprint cost of affected panels, timestamped photos of pre-existing damage, payment timing (escrow for new clients, net-7 for established ones), and a kill fee — half a day rate for same-week cancellations is standard. Clause-by-clause: wraptor.io/blog/freelance-installer-agreement-guide.