Bird of a Feather

The media that I used was scratch board. Scratched out the main feather on the ground first, then lightened up the areas surrounding the bird's shadow. I decided it wasn't enough, so I scratched in another feather. I attempted to use the scratch board to display the texture of the ground and feathers, as well as shading tones.

Any tips on using scratch board, or anything else? Like? Dislike? Why? Thanks!