See the below image for the Crane origami instructions diagram.

Charts, Graphs and Diagrams
The world population pyramid shows a broad base in many developing regions, indicating a large number of young people and high fertility rates. In contrast, developed regions display narrower bases and more rectangular shapes, reflecting aging populations and lower fertility. This demographic divide shapes global economic and social trends.
Chinas future population is expected to decline significantly in the coming decades due to sustained low fertility rates and the legacy of the one-child policy. An aging population and a shrinking labor force pose major economic and social challenges. The government has relaxed family planning rules, but reversing the trend has proven difficult.
The USA population pyramid reflects a relatively balanced age distribution with a slight aging trend due to declining fertility and increasing life expectancy. Immigration bolsters younger age groups, and urban areas experience significant growth. The demographic profile supports a large workforce but raises concerns about healthcare and social security sustainability for an aging population.
India is projected to surpass China as the worlds most populous country soon, with population growth slowing but still positive due to declining fertility rates. A youthful demographic offers economic potential, but challenges remain in providing adequate healthcare, education, and employment for its vast population.
The world population projection for 2100 anticipates significant growth followed by stabilization or decline depending on regional fertility trends. While many regions will experience aging and population shrinkage, others, especially in Africa, are expected to see sustained growth. Technological, social, and environmental factors will heavily influence these projections.
The top 10 largest cities globally, including Tokyo, Delhi, Shanghai, São Paulo, Mexico City, Cairo, Mumbai, Beijing, Dhaka, and Osaka, are vast urban centers with populations exceeding tens of millions. These megacities face immense challenges related to infrastructure, housing, environmental sustainability, and social services as they continue to grow.