Proceed west to shipwreck. Acquire treasure map and empty map. Continue to village and fill in empty map. Make cartography table, make paper and, while holding treasure map in off-hand, expand new map. Only one expansion is enough to mess up the treasure map but I had expanded it fully before I noticed a problem.
Seed -6013657238353885958 Difficulty Hard
Proceed west to shipwreck. Acquire treasure map and empty map. Continue to village and fill in empty map. Make cartography table, make paper and, while holding treasure map in off-hand, expand new map. Only one expansion is enough to mess up the treasure map but I had expanded it fully before I noticed a problem.