A good clothing logo is distinctive, simple enough to print or embroider small, and flexible enough to become a wordmark, icon and pattern. Apparel brands use their logo in many sizes, from a tiny neck label to a full back print, so it needs a compact version as well as a full version.
We also consider production early: embroidery needs thicker lines, screen printing favors limited colors, and heat transfers handle more detail. You receive versions suited to each.