Sergio Gonzalez, who previously showcased the young version of Vi from Arcane, shared his process for creating the Jinx model and gave a closer look at how he textured her leather top. He used Anton Rabarskyi's Stylized Texture Generator, which, as the name suggests, creates stylized textures.
The generator adds dedicated sliders to achieve the desired look:
Here's more of Sergio's Jinx and other Arcane characters, available on his Patreon: