You have to have the image online to post pictures here.
But you can upload your image to the Kingsnake gallery and link to it from there. That is probably the easiest way.
You find the gallery here:
http://gallery.pethobbyist.com/index.pl?cat=557&thumb=1
You just log in with your username and your password (the same as you use at this forum) and then look for the image you want to upload at your harddrive, then upload it to the gallery.
When your image is online you can link to it when you write a message. You have that option “Select image from the Kingsnake gallery”.
Good luck, I am looking forward to see your image – I am so sorry to hear that your dragon died… 
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Teo - A Bearded Dragon