You can create a photo album that includes any of the photos on Paper Craft Planet, even those you didn't upload. To create an album, head to the Photos tab and click the "All Albums" page.
Next, click the link to "Add an Album" in the right corner of the page. On the album creation page, you can select whether you want to choose from just your photos or from everyone's photos on Paper Craft Planet. You can also choose from only photos with a specific tag.
The photos matching your search options will appear in the left page below. Drag the photos you want to be in your album to the right pane. Give your album a title and a description, and add an album cover.
Click "Save" and admire your new album!
Quick tips:
Only the Album Creator can add to an album.
Keywords/tags are case sensitive -- for example, sk071109 is NOT the same as SK071109.
Bonus: I get asked often how to embed your album into a group or other text box area. Here's a quick video on how to do that.