Header Design – Specifying image for logo

I am designing a website: https://www.eduvet.tk

I am using a child theme of wp-forge. I am currently designing the header. I want to have the website logo displayed as an image on the left side of the header. Then I want another different logo on the right side of the header. I have read the codex on designing headers.

This website is an example of what I mean.

Wp-forge allows you to specify text for the left side and an image for the right through its ‘customise’ feature, from the dashboard. It does not allow you to use an image instead. I am starting to look at editing the ‘header.php’ in my child theme, but I do not know how to specify what image to use. I am asking for help, as I want to do this correctly without disturbing the code unnecessarily.

You will currently see the same image displayed on the left and right of the header: This is because I have simply copied the php for the right image into the container for the left image to see if I could then change the source image, however I do not know how.

Thanks