You can't post a picture
directly to this site. (If you ever see one in a post it will be because the Editor has embedded it there; nobody else can do it).
However it's still easy enough to show us a photo.
Go here:
http://tinypic.com/
Click 'Browse'.
Navigate to the location of your image file.
Double-click on it.
Click 'Upload Now'
Complete the 'Captcha' security thingy.
You'll then see your picture on the Tinypic website, with 4 links to the left of it.
Click on the bottom link, to highlight it.
Then right-click and select 'Copy'.
Come to this thread (or create a new one if you prefer), go to where you want your link to appear, right-click and select 'Paste'. (NB: Make sure there's SPACE at each end of your link. DON'T, for example, follow it immediately with a full stop!).
When you click 'Submit' your post will appear here, with the link in red (so that it's 'clickable' and we can then see your image).
It's one of those things that looks complicated but, in reality, is incredibly easy. Give it a go!