Flowchart of uploads

Hi, sir.

Im trying to understand the flow chart of the items i upload on upload page of the theme, including images.

As per the description, the images appear in the order of uploads. So, considering this as template:

Where is the first image and additional images in it?

The description suggests it should be 590x300px. But the first image here doesnt appear to be of that size.

Trying to understand the flowchart of the order in which my uploads ( the preview images, live preview and content that buyer buys ) appear to customer using a reference theme…