Manuductor,
First I have to agree with most of the previous comments, you have a great eye and are using it quite effectively. I think often times seeing the subject and deciding how to photograph it is often rushed past and a photo to quickly made, but you seem to have the ability to see and then shoot.
That said, you asked for input to help you improve so I will attempt to assist you with that. I almost passed after I first opened the page, because of the "noise" in the vase photograph. I am assuming you had the camera on a tripod and therefore should be able to lower your ISO to help reduce the noise (if not the case use a little noise reduction in post processing or both).
Gladly, I didn't pass on the page and was pleasantly surprised and enjoyed the following photographs. Love the western theme restaurant!
For the shot of the boats and railing, I would suggest shooting slightly higher and cropping to remove some of the railing as it creates a leading line that leads the eye past the boats. Leading lines are good but should help you to lead the viewers eye to the main subject.
On the Conch Shell, I would use more depth of field or focus stack to try and keep the whole shell as well as the reflection as sharp as possible. Also retouch out the white spots to the left and right where the shell and reflection intersect. You can see it easily on the download view.
I love texture shots like the puddles on table. You did a great job on this with the depth of field, focus and even exposure, but they are hard to use as stand alone shots as they have no specific subject. They are great for supporting shots though!
On the last shot, but black and white really add to the drama of the shot. The large old trees really help with the impression of this being a really old cemetery and the ornate headstones reinforce that impression. What I would suggest is mentally drawing a line from the bottom left corner to the upper right corner and you will see you have half a photo of the trees and half a photo of the headstones which can cause confusion as to what you want us to see in the photo. By giving the same space to both suggests you value them the same. I suggest you decide what is most important to you and give that more space showing it's importance sublimely to the viewer.
Let me know if you would like me to show you what I mean.
Dave

Very nice work - you're on your way!
Picture of the vase - two comments - shadow/reflection control - I find the dark spot reflections on the two tall vases distracting - find myself looking for what caused them - LOL
Western themed restaurant - good tonal range - but for me I find the shadows on the edge of the picture frames distracting - at least in the tone they are - the shelf on the right -might have been better to crop it out. - but again that's me.
The others - only thing I can say is GREAT! - love them

The shell shot with reflection is my favorite. Still life shots made the same way usually turn out nice.

The first shot in the series (vases ) is one of the most challenging type of shots. The highly reflective surfaces of three objects close together make presenting a desirable reflection in all difficult. For example, seeing what appears to be a room with a door at the end as a reflection in the largest vase was not likely intended. My guess is that it would take a very large light box (many feet by many feet) surrounding the vases to totally control how the reflections on the vases appear and prevent the mirror effect showing what must have been behind the camera. The camera lens would just poke through an opening in the light room/translucent curtains so that even the behind the camera reflection is controlled. Lightening could come from speed lights with large light mods.

Notwithstanding this comment, a very nice job on the photos.