The Swank Theme comes with the built-in option to display a portfolio. Be sure you clicked on Permalinks and then save, before adding a portfolio item.
How to Add a Portfolio Item
- Click on Portfolio in your menu to the left.
- Add new.
- Add Featured Image. Your featured image is what will appear on the portfolio page.
- Add Content. Whatever you type in the post area will appear once your portfolio item is clicked on.
- Link Your Portfolio. You can then link to your Portfolio page by adding a custom link to your menu that goes to http://YOURSITE.com/portfolio
Here are a couple of screenshots from the Swank Demo.