If you aren't able to do one at the moment then that's quite ok.
Firstly, I am so sorry for the loss of your little boy. He looks just beautiful.
I'd love to make a signature for you but I do have a list of others waiting too, so it could take a couple of weeks. I understand if you don't want to wait! However, if you don't mind waiting then I will add you to my 'to-do' list. If I am going to make you one, larger versions of the photos you've linked me would be great too. The easiest way is to email full-sized photos to me at firstname.lastname@example.org
Just let me know what you'd like to do original.gif .