SANJIESAN COSPLAY / Costume planning
Estimate the border from its actual route
A border can run around an opening, disappear beneath another layer and continue on the reverse. Estimating from the garment’s overall height can miss those changes. Begin with the intended decorative route. This is an arithmetic and briefing exercise; the maker still determines real material requirements and construction allowances.
Distinguish the route from the garment outline
Use the selected drawing and trace only the border being discussed. Label a front opening, hem section and any separate cuff path so none is silently counted twice. Keep hidden or undocumented continuations marked as questions. A garment edge and a decorative line near it may not follow identical routes. If the costume is still a proposal, compare a complete outline with a deliberately interrupted border before assuming every edge needs the same treatment.
Show a worked example with its units
For a fictional drawing, two front segments of 35 centimetres and one lower segment of 50 centimetres total 120 centimetres, or 1.2 metres. This is the sum of those drawn segments only. Two separate cuffs each assigned a 20-centimetre route would add another 40 centimetres in that example. Write the expression beside the sketch, retaining the individual values. The total is easier to question when the team can see exactly which sections produced it.
Ask the maker for the separate production decision
Give the route estimate to the maker with the scale and uncertainties attached. Material width, joins, placement and the actual pattern can change what must be purchased; do not invent a universal extra percentage. Keep the final recommended quantity separate from the geometric route so later revisions remain traceable. If a border is removed from the design, update its named segment rather than applying an unexplained reduction to the total. This makes a small design change easier to price and discuss.