Create Line Drawing from Collage of 2 images, mural project

Create a line drawing using the pencil tool in Photoshop. You will be tracing/adapting from a collage of three images to create the outline for a religious mural. You will need to work at 120dpi with .psb file dimension of approx. 180 inches x 100 inches. The image contains about a dozen figures illustrating Christ Blessing the Children. You will download the collage file from a dropbox link and add the drawing on a new photoshop layer in PS 5 or 6. We will communicate to discuss pencil size, overall style, and additional technical details.