I know that the count of putts may be off, but a wrong score is new to me.
You'll have to upload it to the internet, via your cloud or a publishing site like imgur.com or postimgages.org. Take the "direct link" and enter it via "Insert Media" while editing a posting - it's the green "movie" tag in the menu line.
Be sure to limit the size to 450 (which looks like the standard now).
Feel free to comment above and below.
A seasoned but correct description of the complete process is here.