Learn everything you want, but also learn hand-drawing and PS. Accurately speaking, PS is the effect of making clothing renderings, that is, the effect of wearing them. This combination with hand-drawing can make beautiful fashion illustrations; In addition, cdr is to make a style map, and the style map is the detailed process details that define the style; Cad is a kind of printing. Ps and hand-drawing focus on design, while cdr and cad focus on production.