Hit the "preview" button instead of "post" to see what'll happen. What you want is the image's full URL, from http through .jpg How you get that can sometimes be more difficult than it should be, because it's common for hosting sites to say the image's URL looks like that but really is instead
a web page with the image--not "just" the image.
To verify you have the correct thing, test it: The URL must be able to show the image, and just the image, in a separate browser tab or window. If it does, place that URL here between IMG tags.This code:
[img]http://pics.weberkettleclub.com/images/2015/05/16/dogs.md.jpg[/img]
shows just the image:
The test: The image's URL,
http://pics.weberkettleclub.com/images/2015/05/16/dogs.md.jpg pulls in only the picture, it doesn't take me to any sort of web page.