Custom T-Shirt Pattern Creation

I have a small made-to-order T-shirt line that needs a skilled hand to refine the current fit and expand the range. The base pattern exists, but it requires tweaking and sample sewing and possibly full grading (XS–XXL)... (Budget: $25 - $50 AUD, Jobs: Fashion Consulting, Fashion Design, Fashion Writing, Graphic Design, Pattern Making, Photoshop, Photoshop Design, Sewing, T-Shirts, Textile Engineering)