As far as multiple photos go, the best way to handle that is post a comment on your first image with thumbnail links to the additional images. I also put numbers in the titles to indicate that they're the same individual.
How to embed images in comments (I recommend using the thumbnail option):
Open the image (in Arachnoboards) that you want to embed.
Copy the code in "Share BB (With Thumbnail) Code" or "Share BB GALLERY Code." (Both of these options allow the user to click the image for a link to the source.)
Paste the code where you want the image to be in your comment.