Select the signature layer, choose Adjust from the Image menu, and then turn on the color code. Click the eyedropper tool, select gray, and then click OK.

After opening the picture, click the text tool in the toolbar on the left.

The layer panel selects positive overlay to complete the signature ps of the photo.

Fine-tune the position and apply it when you are satisfied.

First put your picture in PS, click the text tool to add text, and then chop your name into the picture.