I had a dream. How do I make a copy of the map in the dream

Hint 1 of 4:

Have you picked up everything you can in the bedroom?

Hint 2 of 4:

Including the torn wallpaper?

Hint 3 of 4:

Zak remembers the map. You may want to let him draw it.

Hint 4 of 4:

Why not use the yellow crayon with the torn wallpaper?