John, there is a simpler way to post the pictures directly from Photobucket.
Instaed of using the "Quick reply" you use the "Add Reply" button (always under the last message/post)
In the newly opened window you see a textfield; choose the HTML button under the textfield and then paste the HTML code supplied by Photobucket in the field.
Voila! That's it!
The diorama is looking great and I'm looking forward to see more Sergio secrets revealed!
;-)