Keep a short record of project measurements
A few specific details are more useful next time than a long account with no measurements.
Record what the finished object cannot tell you
A completed bag does not readily reveal the original cutting dimensions. Fabric has disappeared into seams and hems. If you want to make another, three numbers on a card may be more useful than many photographs of the result.
Keep cutting size, allowances and finished size separate. Include units. “Two pieces, each 7 by 9 inches, including the seam allowance” leaves fewer questions than “small bag.” For paper work, record important fold positions and the stock's thickness or weight when known.
Identify the material as accurately as you can. For an anonymous offcut, describe what you actually know rather than inventing a fiber: soft blue woven fabric from the scrap drawer, for example. A small attached sample may explain more later than an uncertain product name.
Tools deserve a note when they affected the result. Needle size, a particular adhesive or the cutting method may matter. The color of the scissors generally does not. Selectivity keeps the record short enough to be read.
Put revisions beside the value they change
If you widen a hem during construction, correct that measurement directly. A note at the bottom saying “made everything bigger” leaves the affected parts unclear. Distinguish planned dimensions from measurements taken from the finished item.
A brief failure note is especially useful. “Casing too narrow for two cords” describes a problem the next cutting plan can address. “Did not work well” offers no such direction. Add the adjustment that succeeded on the second attempt.
Photograph hidden construction before the final closure when it will help. A seam allowance or glue tab may no longer be visible afterward. A ruler in the picture provides context, although it does not always replace a written dimension.
Store the notes with the template. An envelope or flat folder is enough for a small project. Give different versions a clear distinction, such as narrow or tall, instead of accumulating nearly identical unlabeled sheets.
There is no need to write a complete production diary. Preserve the few decisions that cannot be recovered from the finished object. If you could begin the project again without guessing its important measurements, the notes have done their job.
