How can I create a visually appealing collage using lots of photos?

To create a visually appealing collage using lots of photos, start by selecting a theme or color scheme. Arrange the photos in a balanced and cohesive way, considering factors like size, shape, and orientation. Experiment with different layouts and layering techniques to add depth and interest. Use a variety of textures and patterns to create visual contrast. Consider adding embellishments like stickers or text to enhance the overall look. Finally, step back and review your collage to make any necessary adjustments before finalizing it.