I was going to ask if you used freestyle in Blender and then registered that you said "traditional drawing", bit slow this morning x_x
I love the scratches in the black background, I don't know why, they just look cool.
How many stages were there in making this :O
I rendered the image, printed it out, put transparent paper on top, used ink pens to draw on it, scanned it, superimposed the drawing on the rendering - partially positive, partially negative, added a little glow, some textures, filters...
Oh wow pretty involved process then O_O