If I was working from life, I’d want to indicate every bramble bush in the moat and every hawthorn growing on the motte at Sandal Castle but, as I’m more interested in the structure of the earthworks, I need to simplify.
I’ll add shadows and highlights to build up a three-dimensional effect. For the stippling to represent the vegetation I’ve used a virtual brush with the appropriate name of ‘Seurat’ in the Adobe Fresco drawing app. I’ll use a dry brush following the contours to further emphasise the form.