How is this kind of structure made? Recently I found a MOC made by Headzsets from Instagram, in particular this interesting structure from his EVA work. Here is a picture of his structure:


(https://www.instagram.com/p/BtCymDRHJx6/)

How does he have two 1 x 1 x 2/3 slopes like this? Are there any sets with this kind of structure that I can buy on the market so I can learn this building technique?
Just to add a little to the answer by TheBrickBlogger, the blue piece holding the purple 1x1 slope is likely this one:  

 

Here is a really simple example of one of the many ways this can be accomplished:  

  

The hollow stud allows positioning to be "jumped". Hope this is helpful :)