I presume you have the picture already and wish to UPload it for ID.
You can upload it to one of the many free image-hosting sites on the internet and then ask your question on AB with a link to wherever you placed the photo.
You can upload an image to a photo-sharing website e.g. http://tinypic.com/ and then copy and paste here the link that that site will provide for the image.
You can also use the image search capabilities of Google or https://tineye.com/ to search for a matching image that might already exist online - both those let you either upload the image or use the URL of an online image e.g. what you will have once you have uploaded an image.