New Pet Portrait - Bertie

I have recently started a new pet portrait of a Cavalier King Charles Spaniel. It is a 8" x 10" portrait and is going to be in coloured pencil. It is a bit different to all of my portraits so far because the dog Bertie) is asleep. It's a really cute photo though and I think will make a really nice portrait and lovely for being a bit different. So far I have just done the outline. It is on white paper, I had to darken it show the outline clearly: