I was trying to draw a face on top of an image composite from a movie, I took several screenshots of the Argonath scene in “The Fellowship of the Ring” and made this composite image on Photoshop, you will not find this exact image in the movie because it doesn’t exist.

Then I created a color palette from the colors of the source image and copied the textures to make my drawing on a new layer. I had to observe lighting and dimensions to match the source image.

I moved the layer in the correct position and blended the edges, made minor color adjustments and added details as necessary.