Take a picture of your child's side profile against a plain wall.
Print the photo out. Trace the outline of your child's face with a pencil. You can accentuate certain parts of the child like making the eyelashes longer or adding little wisps of hair.
Then take a black piece of paper and lay it underneath the paper with the baby's silhouette on it. Tape around the edges to keep the two pages together. Carefully cut around the outline, and voila, you are done!