por que mi foto no fue aceptada

Depth of field was too shallow in both images, rendering too much if the scene out of focus. The first image also has noticeable noise throughout. Both images could have been composed better. In the first one, the woman is mostly cut off and both people are much too blurry. In the second image, the arms if the masseuse dominate the image and yet you've cut off one of her hands.

Both images would have required model releases from the subjects.

Your massage picture is a little "grey" and the shadows are underexposed. I was playing around with the parameters, just to get a punchier image. The background element at the left is best taken out.

As for the Jacuzzi: The image needs to get cooler. The DOF is too small. The fact that the glasses are fogged up is true, but gives the whole thing a somewhat dingy appearance. Pictures like this need to be staged so that you control the light and the environment. The people need to be nearer together and the girl must get out of the shadow. The background and the boy's head are one dark blob. The lightest part of the picture is the Jacuzzi's outer wall in the foreground, the light should be on the people and the glasses.

Personally, I like the composition you were going for.  It is innovative and creative.  However, the technical details need work as metioned by others in here.  In the first image your plain of focus is too small,  It should include the faces.  I would have asked the people to move their glasses close to being in the same plane as the faces.  I would also stop down the lens to increase the plain of focus (and of couse you need to increase the ISO and/or lengthen shutter speed (you may need to use a tripod)  to compnsate for stoping down the lens.  In fact, since the image is already underexposed, you need to more than just compensaate.  I like your idea and I suggest you reshoot it taking account of the comments here.  Maybe bracket some of the variables until you get an image that is technically "perfect".

Focus and exposure

Hi,

I would assume underexposed and sharpness.

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Hope that helps.