Create a striking t-shirt design featuring a 3D voxel art representation of a classic video game character (e.g., Mario or Link) depicted in an action pose, surrounded by voxel-style elements like pixelated clouds and trees. The character should be rendered with vibrant colors and layered textures to create a dynamic visual effect, all outlined in bold black for a modern look. The text "Level Up!" should be integrated into the design in a bold, blocky font that complements the voxel theme, placed either above or below the character to maintain balance. Subtle shadows should be applied to enhance the 3D effect, ensuring the final artwork is polished and visually engaging. The final design should be prepared in a high-resolution format with a transparent background, ensuring it is suitable for printing while maintaining clarity and vibrancy.