This video shows how to use Opacity Masks in Adobe Illustrator to add texture to your t-shirt designs, logos, and lettering. It also covers how to export your design as a transparent PNG, which is a preferred file format for Direct-to-Garment (DTG) printing, Print-on-Demand (POD), and Amazon Merch.
How to use Opacity Masks to add texture to your t-shirt designs, logos, and lettering. T-Shirt Design Master Collection: https://thevectorlab.com/products/t-shirt-designers-bundle | Plastisol Textures: https://thevectorlab.com/products/plastisol-vintage-t-shirt-textures
How to export your design as a PNG file for Direct-to-Garment (DTG) printing, POD, and Amazon Merch.
Resources discussed
In case you missed it, here's a video showing how to use textures, layer masks, and brushes in Adobe Photoshop.