I'm not sure what is the correct thing to do, but...
I attached it on there. And I left the requested number of photos in the envelope (they asked for 8, so there were 8 in there). I guess it's possible I wasn't supposed to do that, but my application was processed without any delays, so I guess it was ok with them.
Hello :)
Haven't talked to you in a while. How are you?
Anyway:
How did you attach the photo?
Did you use tape, paper clip? Just curious.