Here are two different ways to represent cherry blossom flowers. Either use the bottoms of plastic bottles, or use an egg carton to represent the flowers.
This project can also be made with a group, if each person contributes a flower to glue on the branch.
In Japan, the cherry trees are in bloom around the beginning of April (depending on the regions). In the U.S. there are many Cherry Blossom Festivals as well. They take place in March or April, depending on the location.
PDF file (5 pages)
The downloadable document contains the list of materials, illustrated instructions, and sample pictures.
This is a free document.