It was nice to see this contest. I've been waiting to do something complicated to challenge myself using lunapic editor. So I decided to take part in this contest. Well my pictures were downloaded from pixabay and pexels.
After I downloaded this image from pexels edited it using lunapic editor.
I made the background transparent so I could use the wind mill alone.
And then pasted it on the image to used.
I made another copy and paste of the windmill.
Then went to download another image.
I cropped the bottom structure of and made the background transparent to use the top structure.
I pasted it unto my work.
After pasting I went to download a tractor that was already edited and used it.
This was how it looked after pasting it.
later went to download a silo edited it using lunapic editor and pasted it.
I had to download another picture that was a water tank and included it on my image using Lunapic editor.
I finally was done with my image. And here it is.
photo Editor used 
if you wish to join this contest Readers can click here to take part.
@lmac