This photo grabbed my attention immediately because of the large empty space. The sky seems very soft and dream-like which is a nice affect. One thing I would suggest is to crop and enlarge a bit. Though this would take away from the gradient sky, it would make the photo much stronger overall. I really like the contrast in value between the light sky and the silhouette of people. The photo is very simple in many key aspects and it completely works, specially concerning value. The composition has at most five values and this is very important. If there was a lot more going on, you'd lose the focal point and this shot would be ruined. One suggestion I have is to change the title of the photo. "Mini People" seems... like you didn't put much thought into it. It seems a shot as well done as this, should also come with a supportive title.

I like first of all that the image is squared. Also the large sky makes it perfect for B&W the people standing on the edge og the picture add it life. Without the people it would be a really poor shot. But they actually look like sticks (like kid drawings).

Also looking at the sand dune I suppose the little tracks they made are quite funny. This is a very serene picture. On a personal basis I would take a larger portion of land instead of sky, but I really like how it came out.

I would also say this is the kind of picture you could easily use ok a cafe or something.