I tried tweaking things a bit using other photos of other grandkids. None was very successful. If you look very closely you can see some dimension to the etching. But I obviously have a lot more to learn about transferring photos to the laser cutter. Next time I will take the pictures with a white sheet as a background which will give me a head start. (you can see I opted not to remove all the background in one of the photos) Maybe I should first turn the photo into more of a 'drawn' image.
All sorts of options for playing around at the TechShop.http://www.techshop.ws
In the meantime the kids enjoyed seeing their silhouettes.