Thread:ADour/@comment-5270921-20151014203847/@comment-4651179-20151017001200

You have to add it like this inside the BlockQuote:

| Image# = File.jpg

And replace # with the number of the order of the speaker in the quote. If the same character speaks more than once, you'll have to repeat the process for each time they talk, replacing the # with the number of the order in which they spoke.