1. If the white background of a signed picture is a color, you can use the Set Transparent Color tool on the Picture toolbar in word to make it transparent. If you point white with a wand, it may be the background. You can clear the background and set it to "No Fill".

2. Right-click all the shading areas, and click Format-Border and Shading-Shading-Point No Fill Color-to confirm that the simplest thing is to brush in the blank according to the format, and it will be OK once.