Oversized T-Shirt Tech Pack

I’m ready to take an oversized, short-sleeve crew-neck tee from concept to production and I need a complete tech pack that a factory can follow without question. The fabric will be 100% cotton, so all specs—body measurements, tolerances, shrinkage allowance and stitch types—must reflect that choice... (Budget: $30 - $250 AUD, Jobs: Fashion Design, Graphic Design, Illustrator, Pattern Making, Sewing, T-Shirts, Technical Drawing / Tech Pack, Textile Engineering)