I saved you from perdition

^{_{Tiiiiiiiiiiinnyyyyyyy}} image is tiny. Testing out a new approach to drawing. Drawing the silhouette black and then using lighter grades of grey for the lines and the final image results in a grey-scale image with the full tones- shadows, mid-tones and highlights. And anything extra like the back lighting I'm thinking of experimenting with.

What is this technique even called? Would love if someone knows the name of it