patternmaker

Short definition from Wiktionary

Noun

1. 1
   Someone whose occupation is to make patterns, which are used as a guide in the manufacture of something else: A tradesperson who makes wooden patterns from which sand molds for sand casting are made.
2. 2
   Someone whose occupation is to make patterns, which are used as a guide in the manufacture of something else: Someone who makes other kinds of patterns, such dress patterns.