Copy of artwork

I decided to do a copy of this artwork to help get ideas of what techniques i could use on my books front cover. 

I started by drawing the outlines of the figures free hand in pencil and then layering a base layer of ink over the top.

I created the grey tones using a big brush, then gradually added in the darker tones with a smaller brush and ink. Then after that had dried i highlighted the whiter areas with watered down Gouache to bring it out more. Then i went around the outlines with the black ink to define eveything. 

I then placed the picture on photoshop to edit it, making it more contrasting, ensuring the black and whites were prominent in the picture.

I think that this style of working could be interesting on a cover of a book, giving it a distinct individual look.