Well schematics can be downloaded and imported with world edit but this in particular can be uploaded as a structure block. You want to type %appdata% in the lower left hand bar, click ".minecraft", then open saves and then the world file and from there you should be able to see the generated folder which has the structures folder inside.

https://www.youtube.com/watch?v=L3_SdCek_Ps this video by pixlriffs is a little outdated but should get the general concept across.