Butterfly and girl

The drawing inspired by the book “Struttura Uomo In Movimento. Manuale Di Anatomia Artistica” that I just read previously. I was trying to refine the drawing further.

The process:
Ok It would be a B/W linework -> How about adding a simple color outside the linework -> Humm It’d be better if I add colors on each object -> Hey there I could add lights and shadows ->It looks good if I put gradient colors there -> Well the background seems empty, I am gonna add something at it.