Colorful Mardi Gras 3D Graphic Design

"Create a vibrant and colorful 4K flat 3D graphic design featuring a Mardi Gras theme for print-on-demand (POD) shirts. At the center, place a stylized purple and green masquerade mask adorned with gold accents, surrounded by colorful beads. Above the mask, display the text 'HAPPY' in bold, black, uppercase letters with a slight curve. Below the mask, prominently feature 'MARDI GRAS' in a similar bold, black font. The background should be filled with festive elements such as feathers in green, yellow, and purple, along with beads in various colors, creating a lively and celebratory atmosphere. The design should be symmetrical, eye-catching, and suitable for shirt printing, capturing the vibrant and joyful essence of Mardi Gras festivities in a flat 3D style."