Start with the constraints
Most weak blind schedules start with the wrong question: "What should level one be?" Start with the constraints instead. How many players are expected, how many chips do they receive, how many minutes can the event run, and how much late-stage pressure is acceptable for this audience?
A 10-player home tournament with four hours available can use slower early jumps than a 30-player charity event that must finish before the venue closes. The same opening blind can feel generous or brutal depending on stack size, level length, breaks, rebuys, and antes.