Down below where the groups are (sidebar) there is a section labeled "details". There is the link for the pic, and the thumbnail code. Copy+Paste that in the description/journal. I'm not sure if you can put them in comments though.
I have a question orz when you are using the overlay layer...do you remove the "clipping group" option in the other one you was using in the begining? I tried to do it with it and...well .-. it happend nothing and I needed to add those details by hand. Sorry if maybe I didn't red well =3=