VA To Output 10 different T-shirt Vector - png Graphic Illustrations with Supplied Art

Artwork supplied.
Vector-png output for t-shirts required.
Approximately 10 variations are needed.
Job can be done in one day. Perhaps half day plus half day. Revisions until right.
T-shirt company is Teespring. They use Adobe Illustrator, so knowledge of Illustrator may be beneficial. Knowledge of Teespring may be beneficial.