Did it!
Today’s shot was merely a test shot and not the final image.
My daughter has a friend over for a sleep-over. As they both have DSLRs I said I;d set up the Strobist setup for them in the garden.
We had 2 flashguns and umbrellas providing key and fill lights and another flashgun providing a hair/rim light.
This was just a quick shot on my camera to make sure we had the settings dialled in. After this shot, the girls did their own thing.