Creatively Correct Exposure

Last night Rob and the kids were patient as I climbed hills on our school campus to get this shot.  It is unedited.  The colors are pretty true to what I saw, which isn't usually the case for me.

Today I watched several Bryan Peterson video clips.  The guy has awful hair,  but his skills make up for it.  He talked a lot about achieving "creatively correct exposure."  I played around with some flowers after I watched the videos and I am pretty happy about achieving that creatively correct exposure.

Of course I am a big fan of the shallow depth of field,  and I'm pretty consistent with the flowers.  Am I as competent with people/portraits? 

Goal-  read 1 section of the d300s manual.