Add an image to your About Me widget
To add an image to your "About Me" widget, you will first want to ensure that the image is hosted online. This means that it has a URL which WordPress can use to link it into the widget. The easiest way to do this would be to upload the image to your WordPress Media Library.
Upload the image to your Media Library
Navigate to WP Dashboard > Media. Click the "Add New" button at the top.
Find your desired image on your computer and upload it to your WordPress Media Library.
Once the image appears in your library, select the image. It will open a box or screen with information on the image.
On the right, you will see a URL titled "File URL" or simply "URL". This is your image's unique URL.
Copy the URL.
Adding the image to your About Me widget
Next, navigate to WP Dashboard > Appearance > Widgets > and add your "About Me" widget to your preferred area.
For the field titled "Image URL", paste in the URL you copied from your Media Library.
Save changes when finished.