The main challenge was to create mockups that would be not only visually appealing but also user-friendly and adaptable for various graphic styles. Each mockup needed to look realistic, accurately displaying designs without distortion or loss of quality. Perfecting light and screen reflections, so they enhanced rather than obscured the displayed content, was also essential. Creating an intuitive, easy-to-use system for users to customize their mockups was a core focus throughout the project.