This was taken with a pair of speedlights and umbrellas. No light on the background (a white wall), which I'd try again.
The intended shot was to have them staring at each other. No dice, my son kept laughing... so I had them put their heads together and look down, drawing an emotional looking expression since it was at the end of the day and they were both slightly tired ;) My kids are great test models for my strobe work, but they grow weary after awhile!
All criticisms welcomed! Thanks...