一个展示书籍封面设计的整洁样板。完全组织PSD文件，拖放你的设计到智能层。尺寸:6000 x 5000像素，300 dpi。
A neat showcase mockup for presenting book cover designs. Completely organized PSD file with smart layer for dragging and dropping your designs into. Dimensions: 6000 x 5000 px at 300 dpi.
