arabic couple relief 3d model

Convert this 2D artwork into a clean, printable 3D STL relief for FDM 3D printing. Requirements: * Create a single solid STL model. * Keep the design as a 2.5D bas-relief (not a full 3D sculpture). * Preserve all details, including the Arabic names "أحمد" and "سهيلة", the heart, the couple silhouette, the tree, mountains, birds, and the landscape. * Ensure all elements are connected to the main frame so the model is fully printable. * Use raised and recessed surfaces to create depth while maintaining a flat back. * Overall thickness: 4–6 mm. * Raised details: 1–2 mm above the background. * Add a rectangular outer frame approximately 10 mm wide. * Smooth all curves and clean up thin details that may break during printing. * Optimize for FDM printing with a 0.4 mm nozzle. * No supports required. * Scale the model to approximately 220 × 160 mm so it can be displayed as a decorative shelf frame. * Export as a watertight, manifold STL with no holes or non-manifold edges. * The final resul