First of all, install FileZilla in your system
after installation open filezilla
- click on icon belo file menu and give connect
- click on the right side section and select the file of the below path
/applications/psdbdsecye/public_html/app/design/frontend/JJ/Theme
3. select the files you needed from the app/design /theme and right-click and select edit and view and save then clear the cache by this ay we can add changes to our file and see them reflected in the server