I've done a few projects and up until now provided a few pics on a slider with links to the finished project however, one of the projects have just undone design changed ( I prefer the 1st one ).

So what are the nest / most advisable practices for showcasing previous work? How do you record your previous work ( I always think it's better to be seen in action )
Do you link to your projects from your site ( is this a drawback for seo, ie linking to each other? )?
Anything else interesting about this issue that you know of?