Projecting an image on the wall allows you to create detailed, proportionally accurate renditions of photographs and illustrations even without great artistic skill. Any type of projector that shows images accurately on a movie or projection screen will also work on a blank wall.
Painting A DIY Wall Mural
Fundraiser by Jo Ellen Burke : Public Painting Project Mural Art Fund
Family Mural Project - The Art Pantry
How to Project an Image on a Wall to Paint a Mural
Wall painting: ideas that grow – Arte a Scuola
How to Project an Image on a Wall to Paint a Mural
DIY Wall Mural: A How-To Guide for Beginners - Dani Koch
Mural Making Process
Community painting day brings over 100 volunteers to decorate 'neglected' wall - Santa Monica Daily Press
7 Easy Wall Mural Ideas Room Reveals : Southern Yankee DIY
In St. Petersburg, how did these paint-by-numbers community murals come to be?
Drawing Tools for Enlarging