Three-dimensional flowers:

Take a 15cm square paper and fold it diagonally, as shown in Figure 1. Then fold each corner toward the center to form a square, as shown in Figure 2. Fold each inward-folded corner outward on the left side, fold outward on the right side, and then squeeze it inward, as shown in the third picture. Fold down along the center point to form the image in Figure 4. Then fold each sharp corner upwards to resemble a boat, as shown in Figure 5. Fold the "boat" in half along the center and glue each folded place together, as shown in Figure 6. Glue it together and it will look like the seventh picture, which is part of the petals. Follow the above process to make four to five petals and stick them together with glue to get the final three-dimensional flower shape, as shown in the last picture.