Add Support for Dynamic Content

When sketching your site, remember to add support for dynamic content. Imagine you decide you want to pull your Flickr feed to your portfolio. Well sure it looks good when theres 12 photos, but what about when theres 21 or 36? How will your portfolio look with an odd number of images compared to an even number, like you sketched it out to look like?
These are the type of questions you have to ask yourself as you sketch out your layout. How can I add more images to my layout without cluttering the design? Is pagination an option? Will I only be able to keep XX amount of images visible at a time?