Common mistakes when texture packaging 3D models include incorrect UV unfolding (causing stretching/distortion), ignoring resolution needs (blurriness or oversized files), and poor seam placement (obvious edges on visible parts).
- **Bad UVs**: Rushing layout leads to texture warping, especially on curved surfaces. - **Wrong resolution**: Low-res for close-ups = blurriness; high-res = unnecessary bloat. - **Visible seams**: Seams on prominent areas (e.g., faces) break texture continuity.
Fix by previewing UVs in a viewer, matching resolution to use case, and hiding seams in creases/less visible spots.