I've learned two things from completing a DIY silhouette project:
A) It was much easier and quicker to accomplish than I had thought, and
B) Geez, my kid has a giant noggin
Let's take it from the top:
First, I considered a few profile photos of Griffin that I took when I stumbled upon him wearing his sister's dress-up necklaces and playing with her toy mobile phone (don't mind the little bump on his head...it was probably from one of countless times he's barreled into a wall).
Next, I printed out the photo with the best profile and gathered my supplies of a pencil (bunny pencils are the household standard), sharp scissors, black construction paper and tracing paper.
Next, I sandwiched the papers in the following order: picture on top, tracing paper in the middle, and construction paper on the bottom. I taped it to the table before tracing so the image wouldn't move around, then I used the pencil to outline his profile on top of the photo.
You can see where the tracing paper is a little sensitive and leaves marks, but it was ok because I was going to show the opposite side. You'll also see that I modified the neckline with my pencil, too.
I then cut along the traced line and bingo! Instant DIY silhouette. It took me longer finding the right photo than the ten minutes to print, trace and cut the image out.
Wavey's silhouette will most likely be harder to do because she has curly hair to work around, but I'll cross (and curse) that bridge when I get there.