I would love to say that taking photos of my thirteen year old is easy.  I got one "posed" shot, and the rest while he pretended I wasn't there.  
One thing that might be harder than taking the photos was finding a pattern for this age.  
I think this works, and Charlie didn't have any complaints while wearing it.  Always a good thing. 
Same pattern as Andrew's, just the complete opposite colors.  
Pattern:  billie, rowan pipsqueaks