Here is a drawing of Tessie, with the photograph.
I usually start with the background first.
Tessie loves to lay in the sun, and so she became "Sunbathing Tessie"
The first step is to acquire a good photograph.
Next, I make a chalk sketch on canvas.
I start applying paint with a rough background...
Voila! This portrait transports Samantha from the kitchen to the garden.
Becomes a sketch...
And instead of looking for a biscuit, Io is waiting for his frisbee in the field!