If you want to upload an image icon then go to then, Follow the below steps.

Step: 1 => Open the ShagunBox app and choose the Free Apps from the side menu. 

Step: 2 => Click on the Trust Badge app.

Step: 3 =>  Click on the Upload trust image button and select images.

Step: 4 =>  Now click on the Add images button.

Step: 5 =>  Click on Save Settings button.