How to edit tile images and icons
1. Navigate to your course
2. Click the "Edit mode" button.
3. Click this link.
4. Click "Edit tile"
5. Click "Pick a new icon or background photo"
6. Click this image or any other icon you prefer
7. Click "OK"
8. Click "Pick a new icon or background photo" if you prefer an image instead of an icon
9. Click "Photo library"
10. Click this image.
11. Click this button.