Hi @Eduardo E. V. ,
The first photo is slightly underexposed. It is also slightly over saturated or has a white balance issue. The depth of field is shallow, thus only the fan that is in focus.
yellow skin

Out of focus

The second photo has a white balance issue and is out of focus.
Blue face, Edge not sharp

You need to zoom in on the photos you take at between 100 and 200% before submitting them. Here is a list of issues that you need to look for and correct if possible. You cannot correct focusing in post processing. It is best taking technically correct photos, then use post processing to correct unavoidable errors.
The first thing you need to do is to learn about all the functions of your camera - how to achieve focus exposure, etc. While auto captures are convenient and easy, it most times do not yield the best quality results. Learn to use manual settings. I assume you are using a DSLR camera, if not, here are some tips to take into consideration.
To improve your photography skills, I suggest you buy books or take photography courses. There are a couple LinkedIn links that are engraved in the first link I post here that you can benefit from.
Best wishes
Jacquelin