Shenzhou computer, windows 10, office20 19.

1. First, prepare a hand-signed picture, as shown below.

2. Then add the age in order of "Insert"-"Illustration"-"Picture"-"This device", as shown below.

3. Click the signed picture again and click "Insert", as shown in the figure below.

4. Then adjust the size of the signature picture and put it in a suitable position, as shown in the figure below.

5. Click Format-Color-Black and White, as shown in the figure below.

6. In this way, the signed picture becomes black and white, as shown in the figure below.

7. Then click Format-Color-Set Transparent Color, as shown below.

8. Click the blank area of the signature picture with the left mouse button again, as shown in the figure below.

9. In this way, the handwritten signature is completed, as shown in the figure below.