This nice little ball is stitched on C10 with masu and spindle stitches. The sakura blossoms are defined by the empty space between the green polygons.
Sakura blossom temari ball
In case you were wondering about my temari progress, here are pictures of the temari balls I made recently. All three were made on request asa presents, one is a traditional “peeking lotus” design, the other – rainbow-colored flowers on C10 division, and the third is almost free-embroidered and features a little angel face with red hair and tiny wings.