The procedure you used (right-click, etc. from our instruction page) is exactly right for images from most of the web. And what Kathryn suggested will work, however it looks as though Webshots (like another photo hosting site) wants you to link back to your photo on their site, so is providing the code you need here.
Here's how to get it:
1. When you're on your image's page, click on the icon that looks like a computer screen with a blue band at the top (if you put your cursor on it, it will say "copy this code to post this photo in a forum"), which will take you to another page that says "post this photo" and shows a window with code info.
2. On that page, the default is the thumbnail size you posted. At the top of the window are other choices, labeled in pixel size. Clicking another size choice changes the code, but not the picture you see. To check and see if it's the size you want, click the aqua-colored "preview this size" link which will pop-up a window showing the size. If not, close the window and repeat with a different size choice.
3. When you have the size you want, copy the code in the window labeled "post in a forum", bring the code back here and paste it in your reply window where you want it without using any of the buttons above the reply window
. That's it!
Give it a try!