Writing Feedback / Photographs/ Reminisce about the past ; Classification Essay [6]

Hi everyone!! Here I attach an essay I did last year for a class now I have to take again because I flunked it. I didn't get a good grade on this essay, so I want to rewrite and I'd really like your help to do so.

More than anything, I'd hope you can help me identify my weaknesses in writing, what you can tell from this essay.
I wrote a classification essay on photographs. Here it is. Thank you in advance.

For almost two centuries now, photographs have been a significant part of our everyday lifes. Photographs capture people's especial moments and preserve memories of their favorite times. Even though photographs usually serve to reminisce about the past, sometimes people simply do not want to be reminded of how they used to look. This happens because people do not always photograph well. In fact, photographs can be classified into three categories according to how people look in them.

The least common photographs for most people are those in which they love how they look. This kind of pictures are the ones that people show proudly to their family, friends, and especially to prospective better-halves. These photos are often framed and placed on spots where guests can clearly see them. In this category we are likely to include photographs where people have fabulous hairdos, wear their favourite outfits, or simply look their best. People guard these photographs with their lives, and they often feel these photos could have made it into a professional model's portfolio. As much as everyone loves this kind of photographs, they are the most rare.

Not rare at all are the photographs where people feel okay with the way they look. People are not reluctant to show these pictures to their families and friends, but they may consider it twice before showing them to a potential true love. These photographs commonly fill people's albums, since there is no reason to be ashamed of them. Among these photos we may find those in which people have decent haircuts, wear regular clothes, or do not look shabby. People take good care of this kind of pictures because, considering that they make up most of anyone's photo albums, of the three categories this is the best to reminisce about the past.

Quite common and most dreaded are the photographs where people look awful. People are utterly unwilling to show this kind of pictures to anyone, whether relatives or friends. Showing a photo of this kind to a possible soul mate is out of the question. These photos are always hidden so that no one can see them, if they have not been burned already. In this category are included those pictures where people have horrible hairdos, wear old-fashioned clothes, or simply have a terrible expression on their faces. People always make sure to keep this photographs well hidden, and if possible they do away with them. Of the three types of photos, this is the worst to remember how people used to look, and yet they are fairly common.

All of these categories make up anyone's collection of personal photographs. Nevertheless, that does not mean that people are always fond of reminiscing about their past with all of these pictures. In order to keep people's own self-esteem intact, the best choice is to keep those pictures where they look okay in their albums, those where they look their best where everyone can see them, and those where they look their worst out of reach of curious eyes.