I gotta admit, this next part scared me a little. Designing something sweet and prepping a mural surface both take a lot of time and work- but both are manageable! Transferring an image onto a 900 square foot wall- that takes some serious strategy- and math.
You have a few different options when it comes to mural-transfers:
First, there’s the pouncing method. This is the technique Michelangelo used to transfer his full-scale drawings onto the ceiling of the Sistine Chapel.
First the artist makes a line drawing of their full-scale image on paper. Holes are punched through the paper at frequent intervals along the drawing. This punched paper outline is then taped to the wall and a charcoal or chalk powder is “pounced” over the holes, forcing the powder through the holes onto the wall. When you remove the paper from the wall you should be left with a series of small dots following the lines of the original drawing which can then be used as guidelines for the painting.
Here are some examples. Quilters seem to use the pouncing method a lot- these examples are from the quilting world:
You can also project your image onto the wall. Old school projectors and transparencies are a good way to go (my fav, even if they do remind me of high school math class):
and even better, digital projectors that work with your computer:
This is a great way to go for smaller scale indoor walls like the one below, but can be problematic for large walls outside (getting far enough away from the wall, having light conditions be dark enough, perspective issues, scaffolding getting in the way of the projection, etc).
Finally, there’s the gridding process. It is an inexpensive, low-tech, time-intensive process, and while it is not as quick as using a projector, it does have the added benefit of helping to improve your drawing and observational skills. A plus for the Apprentices!
In a nutshell, the grid method involves drawing a grid over your reference image, and then drawing a grid of equal ratio on your primed mural surface. Then you draw the image on your wall, focusing on one square at a time, until the entire image has been transferred.
Here is my team gridding the wall: we marked one-foot increments across the top, bottom and both sides of the wall, then used a snap-line to “draw” the lines across the wall. Annie is at the top holding the chalk line, and each team member below her is handing the line down to the very bottom, where Sydney was holding it in place where it is marked. When the line was in place and pulled tight, each person snapped it at their level of scaffolding.
ohhhh SaNAP!

It was easy to translate my image into a line drawing on the computer.
From there, I took the line drawing into Illustrator and created a grid in the same ratio as the one we had created on the wall. Five-foot sections were printed out on 8.5 x 11 paper.
Apprentices took on one five foot section at a time. Up they went on the scaffolding, using their amazing observation skills to make this 900 square foot image come to life.
Below: Chad and Erika
One square foot at a time! Emily, Sydney and Ke’Monte


















