1st step pencil illustration

2nd step I added flat colors for black and red

 

* I will post the rest as it's finished - final version coming very soon (any day now).

Step 3 I added the rest of the flat colors, blue and skin tone. As for the rest of the environment i decided to keep as greyscale.

For my last step I just  added shadow and lighting tones on the figures and finished off the sky with a smokey/cloud brush.