You did it right - this is a new post. I would suggest including the date in the subject line. Make it 6/8 Tucker AMPS xx. You can do this by editing your post now by clicking your current post (this one) and selecting "thread tools" on the far right side. When you do, as the author, you have the option to "edit title".
For the link, what I do is go to the upper right part of the screen (where my name is). Click my name and scroll to "your content" When you see your content, you can select your most recent post. Click on that and then select the URL for that posting. Copy that so you can paste it in to your new post. You can just past it or use the link icon in just above the edit window to make a hyper link.
Hope this helps!