The Ghost of Christmas Present: The First Steps

I got a good start on my big Christmas picture last night.
I got the whole thing scaled up on the 7’ by 4’ canvas, and I got a few hours of painting in.
It would be great if I could paint the whole thing in situ in Hodges Figgis bookshop, but there is going to be so much to do that I just have to get a start in the studio.
Also the light in the window is going to be very unpredictable and I will only have a four foot space to step back in, so I want to have my tonal values well established.
I am remembering too that the last picture I did of this size took four months and I am supposed to finish this one on Saturday.
Fingers crossed!