Say you are building a website which has a 'Related Content' feature. Then say your client says something like "This is great, but all the related content looks like the teaser on the listing page. Can't we choose ourselves how we want it to look?" What's your response? You say yes, and you go install Display Suite or Panels or some other heavy duty module? Or, say yes and follow these neat little instructions. No one says no to clients, do they?
Here's what you need to do: