I fully agree with Sebastian. Technically there is nothing totally wrong with these shots, but photographs need to be more more than just a carbon copy of what what was actually seen with the eyes. Anger, sadness, happiness, temperature, loneliness, speed, size, innocence, beauty, age, anxiety, those are just of the few things that one can use in a photograph (and I'm not talking about taking shots of leafs for a biology encyclopedia...).

The word "story" that Sebastian used is actually not the right word (trust me Seb, I've also used that word many times). The word "story" sounds too heavy. What it's all about is trying to make the viewer see things with their brain. Don't get me wrong, viewers shouldn't sit down and look at an image for minutes to figure out what's going on. Take for example a few of the elements I mentioned earlier and think about what we as photographer can do to to express these things. Take for example "danger"; a different camera angle or light setting can express this.

I do think that you made an attempt in picture #3, but because of the wrong camera angle and the lack of visible features in the faces, you've created distance between the viewer and the actual subject, when you were probably trying to achieve the opposite.

#1; I don't "see" a building (even when there is one), I see a lonely guy. You should have increased the impact of that particular element. Try not to go all the times for what your eyes consider beautiful or interesting.
#2; That's for me a snap shot. Nothing wrong with it, but you shouldn't include the fingers. One can say; "yeah, but then he runs away!". Sorry, but doesn't change the fact that fingers shouldn't be there. For some people a shot of this animal might create a sense of a anxiety, because they never saw one up close or never touched one that was alive.
#4; This image had potential. It could have worked if you had included a larger area of the beach. It's clearly a ball that was left behind because it was damaged. A large empty beach would have increased this feeling of "useless, old, wasted, loneliness". Again, there might have been a lot of people on the beach, but that doesn't mean that you can decrease your angle and then hope that the image is going to have the same impact.

I do hope that you understand what Seb and I am trying to say here, because it's such an IMPORTANT part of photography and sometimes hard to explain in just a few words.