1. Preparation materials: school uniform round label, sewing needle, thread, scissors and pins.

2. Determine the location: fix the location of the logo on the school uniform with a pin.

3. Start sewing: thread the sewing needle through the sign on the front of the school uniform and inside the school uniform to ensure that the sign is firmly connected with the school uniform and the sign will not tilt. You can choose straight seam or cross seam, depending on your personal preference and the material of school uniform.

4. Appropriate sewing: According to the size and shape of the logo, choose the appropriate sewing method to ensure that the logo is straight throughout.

5. End sewing: After sewing, tie the thread or hide it in the school uniform to ensure that the logo is fixed on the school uniform.

6. Inspection result: Turn the school uniform upside down and check whether the sign is straight and not tilted. Remember, care and patience are very important to get perfect results. If you are not familiar with sewing, you can consider seeking the help of professional sewing teachers, who can help you sew the unified round label more firmly and smoothly.