over a year ago I had made the final adjustments to my t-shirt pattern. I usually draft my first patterns on medical examination paper. It is a less expensive paper to draft on, but more durable than regular tissue paper. Once I feel the pattern is perfected (or good enough for now), I transfer the tissue paper pattern to tagboard. It took me well over a year to transfer my pattern to tagboard. Really, it is amazing I managed to keep all the pieces together without losing any. The pieces floated between my craft table and the floor in all that time! Now I can use these pattern pieces for some other design ideas that have been floating around in my head. I store the tissue paper patterns in 6" x 9" envelopes for future reference. Both the tagboard pieces and the envelope are labeled with the style number, size, piece name, seam allowances, and cut quantity.
*There are different work flows for pattern making. This is mine. Some professional pattern makers do all of their pattern making directly on oak tag and some are CAD only. Also, I do things a little differently in my home studio versus work. For example, the t-shirt pattern pieces are cutout in half because I place the piece on the fold at home. This would not happen in a factory. Generally, a production ready pattern would be the full piece (left and right sides) and not placed on a fold. It's not always so simple though. The pattern pieces are created to meet the specs of the fabric and production facility so variations may exist.