What processes can be performed on leather to increase its artistic appeal?

Tooling
Process characteristics: rotary carving knife, printing tools in vegetable tanned leather carved out of three-dimensional patterns, combined with the coloring to form a relief effect, commonly used in saddles, boots and other vintage products.
Artistic expression:
American western style: carving cactus, wild horses, revolvers and other elements, with ochre gradient dyeing, to reproduce the free spirit of the wild cowboys (such as the leather wallet of the American brand Danny's Leather).
Oriental motifs narrative: Carve peony, landscape and bronze motifs with delicate knives, and partially fill with mineral pigments (such as stone green and cinnabar) to make a Chinese tea mat leather cushion, which is like a moving miniature fresco.
Leather Embroidery
Process characteristics: leather as a “canvas”, with wax thread, gold and silver thread embroidery patterns, can be combined with beads, feathers and other materials to enhance the sense of hierarchy.
Artistic expression:
Folk style totem: Hmong embroiderers embroider maple butterfly patterns on cowhide leather, using indigo thread material with silver beading to make folk style satchels to pass on the memory of the ethnic group.
Modern abstract embroidery: Möbius rings and fluid lines are embroidered on black sheepskin with monochrome cotton thread, creating a minimalist artistic sense (e.g. the leather embroidered handbags of designer brand Jil Sander).
Embossing
Process characteristics: through the hot press mold on the surface of the leather embossed with a fixed pattern, can simulate crocodile skin, snake skin and other animal texture, or customized exclusive logo.
Artistic expression:
Bionic texture: delicate lizard scale pattern is embossed on lambskin, which is dyed with emerald green luster, and made into dinner party clutch, just like wearing the mystery of natural creatures on your body.
Vintage letter aesthetics: copper letter molds are used to emboss the recipient's address and postmark pattern on the leather envelope pocket, with a lacquer-printed wax seal, creating a sense of ritual of “love letters from the old days”.