Apply transparent texture in Photoshop using Layer Masks. T-shirt design tools shown: T-Shirt Design Master Collection 1 https://thevectorlab.com/collections/t-shirt-design-master-collection
The Big 6 Bundle (largest bundle of t-shirt design tools) https://thevectorlab.com/collections/big-t-shirt-design-bundles
Aventura graphic & logo templates https://thevectorlab.com/collections/aventura
Learn:
How to apply transparent texture using ANY black & white texture
How to properly scale your texture
Why using layer masks is the best method
T-shirt design tools shown: