This is my second thought since it was a pencil drawing I would try some split toning on it. Worked nicely I think.
The original photo is here - f https://365project.org/joansmor/365/2019-10-29
@k9photo I am a little confused. The photo I refer you to is just that a photo and it is what I used to make my pencil drawing. No charcoal. Oh are you talking about the house? That one was a photo that I gave a painterly look and later turned to black and blue but the horse is actually my drawing,
Ian