Hello @beautifullycalm,

To change the service icon go to Admin Panel > Appearance > Customize > Widget > Front page Widget area and place Corporate: Services widget.

Now change the icon from “Icon” Field as you can see in below-given screenshot:

https://prnt.sc/inf9ry

Also, the theme does not have the option to add the photo in this section and as much as we would love to help you with this, we are unable to do so as it requires higher code customization and this is beyond the support we offer for our product.

Our suggestion to you is hire a professiwon’t developer so that your theme wont be affected in any way.

To hire a developer, please follow below given link:
http://themepalace.com/hire-a-customizer/

Hope this helps.

Thank you.

Best Regards!!