How to comment on Facebook pictures?

To comment on pictures on Facebook you need to first log into your profile and open the photo that you want to comment on.
For this you need to go to your profile and click the option “photos”. If you are commenting on your friends photos then you need to go into their photo album. Once you have opened the photo you want to comment on, you would see an option “comment” on the bottom left of the photo. In fact, it’s exactly below the photo. So just click on that, and write you comment.