Website Baker Portfolio ModulePortfolio Detail
When the Catalog page is created you are ready to add one or more Detail pages.
Images
The detail page starts with a section to upload an image.

The image you upload here is added and resized in the 3 different sizes that were configured in the catalog settings.
The images are stored in the /media/portfolio/ folder and are named thumbxx.ext, mediumxx.ext and imagexx.ext, where xx is the section_id of the current section and ext is the original extention of the uploaded file (jpg/gif/png are supported).
After the first time the page is saved and the images are generated this part of the page will change in 3 different fields where you can upload a new image to overwrite one (or all) of the images.

The portfolio on this site uses this to create nice square thumbnails/medium images but different sized full-images.
User Defined Fields
The next block is build using the User Defined Fields that are configured in the Catalog page.

Just fill them with the content you designed them for.
To help with URL's being filled in the fields, any "http://" will be filterred from the fields.
In your template you should now be able to use "http://{WEBSITE}" to create an external link.
WYSIWYG
The last section is the WYSIWYG section.

This will use the configured WYSIWYG editor and allows you to add any type of content you like to the details page.