Here's a quick tutorial on how this is done.
First, get all your pieces ready for sewing just like the original tutorial. Also, cut out a piece of material 6x12 1/2". This will make the pocket for your crayons. Fold this piece in half lengthwise and press so it is now 3x12 1/2"
Mark your sewing lines as directed for the pencil area. Then mark sewing lines on the crayon pocket placing them in between each of the sewing lines for the pencils. Measure in 3/4" for your first line and then every inch after that. Here is a diagram to hopefully make it more clear.
Wow! Make sure your lines are straighter than mine. :)
Next, get ready to sew. Follow the sewing directions in the original tutorial. We are just going to be adding an extra layer.
Your first stitch will be the crayon section to the pencil section. Make sure your edges line up and stitch the first line. (Without the body section.)
Now, place the attached pencil and crayon sections on top of the body and line up the edges. Flip the crayon section back out of the way and sew your first line on your pencil section attaching it to the body.
After you have that line stitched down, lay the crayon section back in place. Then get the body out from underneath.
Keep alternating this process until you have made it all the way across the body. You will eventually end up with this.
Just remember - When sewing the pencil section to the body, have the crayon section back out of the way. When sewing the crayon section to the pencil section have the body folded back out of the way.
I think this is all clear. If you have any questions, please feel free to leave a comment here, on facebook or email me.