Directory Listing Page Customization

Ok - I'm nearly there. I have my listing submissions the way I want, now I need to customize the listing page that shows all entries.
I'm a relative n00b to WP customization, but I'm getting there.

How to I create a custom page to show my listings how I want to see them? Large photo, custom fields, etc formatted to my liking?

Please be specific - I'm still learning!!