Hmmm, Ok, let me try again.
This is an image URL.
http://www.actionfigureinsider.com/main/wp-content/uploads/LEGO%20google%20logo.png
When you just paste it in the reply box like that, it shows up as a link, seen here. http://www.actionfigureinsider.com/main/wp-content/uploads/LEGO%20google%20logo.png
In order to display the image, you need to put that URL in image tags, which are these.
[img][/img]
So when you put the image URL in the tags like this, disregard the red coloring.
[img=http://www.actionfigureinsider.com/main/wp-content/uploads/LEGO%20google%20logo.png]
Then you get the image displayed, like this.
Now, to put text in a spolier tag, you use these.
[spoiler]Put spoiler text here[/spoiler]
So the above will look like this.
NOW, if we use both of these things together and we put an image URL inside of image tags, inside of spoiler tags, you get an image inside of a spoiler.
This is what your text will look like.
[spoiler][img=http://www.actionfigureinsider.com/main/wp-content/uploads/LEGO%20google%20logo.png][/spoiler]
It will look like this once you post it.