You should have a choice to either take a screenshot of your entire screen or only a portion.
To protect your privacy, I would suggest only taking a screenshot of the problem area.
If you're satisfied with the screenshot, save it first, then upload it to a photo hosting site.
Then share it here on FR.
If you want to.
I can do everything you suggested except posting it on a picture hosting site. I've never done that before and don't know of one to use.