3D Model: DESIGN A BASIC 3D MODEL OF A LETTER ENVELOPE — FUNCTIONAL, MINIMALISTIC IN FORM, BUT STYLISTICALLY INFUSED WITH A DARK, EXCITING, AND ATMOSPHERIC THEME. - 3D MODEL OF A TRADITIONAL PAPER ENVELOPE - INFUSE IT WITH A DARK, CINEMATIC VISUAL STYLE - THE ENVELOPE MUST BE RECOGNIZABLE, FUNCTIONAL (OPEN/CLOSE MESH SEAMS), AND EASILY TEXTURABLE 1. UNDERSTAND: - THE ENVELOPE IS A SIMPLE RECTANGULAR FOLD WITH A FLAP — YOU MUST PRESERVE THIS STRUCTURE - "DARK EXCITING THEME" IMPLIES DRAMATIC SHADOWS, TEXTURE CONTRAST, AND MYSTERY — THINK STAINED PAPER, WAX SEALS, AGED OR METALLIC INKS 2. BASICS: - THE BASE SHAPE IS A FLAT RECTANGULAR PLANE FOLDED IN A TRIANGLE FLAP