The collage should be designed to showcase water conservation techniques in rajasthan and nagaland. the background should be a light blue color, and the collage should be divided into two sections: rajasthan's traditional water harvesting structures and modern methods. the centerpiece should include a map of india, arrows, and a text box titled "water conservation techniques." the collage should also include small icons or illustrations representing water drops, trees, and people conserving water, as well as key water conservation tips. be creative with the design, use appropriate colors, and select relevant images to represent the water conservation techniques used in rajasthan and nagaland.