User blog comment:Cnoteboat/The Importance of Search Engine Optimization/@comment-4129195-20150126224547/@comment-25861950-20150127002345

In reply to your second question, a general overview of the group of images would help, with a few specific notes for the images you feel are most important. You might want to write at least a few words on each, but you should go more in depth with, say, 30-40% of them.