Issues with Image recognition.

So I am working on some basic SEO functions for our website
http://www.mercurymosaics.com and have run into a bit of a snag –

As an example this page:
http://www.mercurymosaics.com/gallery/flooring/

The SEO plugin by YOAST states the following issues with it:

There are 1 words contained in the body copy. This is far too low and should be increased.
The keyword doesn’t appear in the first paragraph of the copy, make sure the topic is clear immediately.
No images appear in this page, consider adding some as appropriate.
The page title contains 24 characters, which is less than the recommended minimum of 40 characters. Use the space to add keyword variations or create compelling call-to-action copy.
No outbound links appear in this page, consider adding some as appropriate.
The page title contains keyword / phrase, but it does not appear at the beginning; try and move it to the beginning.
The meta description is under 120 characters, however up to 156 characters are available. The available space is shorter than the usual 155 characters because Google will also include the publication date in the snippet.
No subheading tags (like an H2) appear in the copy.

Obviously there are items I can fix on an immediate basis, like the meta description and things – but I seriously don’t get why it doesn’t recognize the obvious images (…the page is almost entirely images).

I’ve searched around and not found much as to what is causing this. Is it an issue with website structure, yoast issues, or for real that these items are not being indexed?

This has happened on several pages and I am looking to fix it.

Thank you for your help on this issue.