Just my views from a brief look..
The second picture to the right up top. Something looks wrong with your face. It doesn't do your looks any justice.
The over all focus on your images appear a bit soft, the lighting seems a little flat and doesn't seem to show shadows, the background is too distracting and takes my attention of you.
I have a few theories about photographs.
- We read from top left to right from a book. With a photograph we generally look in the top left first. If it is bright we then focus on the darkest point. If it is dark we then focus on the brightest spot. Using that theory is the second focusing point what you want as your main focal point?
- Also with photographs and posing. I recommend posing in the mirror so you know what your over all facial expression will be on camera. Same as with posing draw your pose as a stick man. Does it look the pose now look appealing? Are the angles forwarding your attention to the main focal point?
- We see the world in 3D. A photograph is 2D. What makes a photograph appear 3D is shadows. Hence shadows are important in bring dynamics to a image.
Using those theories in your next shoots would for sure improve your images from my experience.
The Alein Suero photograph you have is your best work. Look at the shadows as a starting point.