The grammar and vocabulary are excellent.Memories
Today was a poignant day. After l left Santiago's house I walked downtown.
[In English we don't join two sentences with a comma. This is called a comma splice. You could use a semi-colon, but the two sentences are not really related enough to be joined.]
The streets were still wet, because it had been raining for a few hours. My jeans were soaked through with water up to my knees; I did not noticed the puddles. My mind was empty at the time and the only thing I could recognize was the lovely smell of wet earth. In a few hours the darkness will cover the village; there are still some noises on the streets from the kids playing and laughing. I finally got to the downtown plaza, where I paused for a few seconds to look at the majesty and beauty of the trees. I couldn't resist the desire to sit down and contemplate the
picturescene. Suddenly a touching scene made a profound impact intoon my heart. Before me, a son was learning one of the initial rites of childhood, riding a bike. I was missing something that I didn't learn to appreciate until it was gone.
The aroma of handmade tortillas woke me up that morning, meaning that grandma was preparing el almuerzo for grandpa. I got up from a warm bed later than usual, because school had been canceled. At home my grandpa had made a fogón of stones and mud mixed with dry pine needles which gave a special smell to everything my mom or grandma cooked. I spent hours and hours in that kitchen where around the walls she had hundreds of hand crafted pottery, each one with a different paint design. My grandma was proud of the pots and cups she had as well as the plates. It seemed to me like she knew each of them by their shape, color and most importantly the memory it brought to her. Usually, I get up from bed and put some food in a container, but that day was different. I didn't have to hurry, so instead I sat down at the table and enjoyed a green salsa that my mother made. Isabel, my sister, always complained about me eating all the salsa. She is my second sister, who has always been the closest to me, maybe because she was the one I had to take care of since she was a newborn.
[A comma is mandatory after 'sister'. Otherwise it means that she is the second sister who was closest to you, leading us to wonder what happened to the first sister who was closest to you. See: non-defining v defining clauses.]
Even though we always fought, she has always been respectful to me. She got up from the table and offered her seat to my grandfather, who just arrived
toin the kitchen from watering the rosebushes.
[Same reason for the comma after grandfather. This is a non-restrictive non-defining clause. The clause doesn't define which grandfather she offered a seat to, which would be the meaning without the comma.]
I was constantly fascinated by my grandpa's stories; he loved to share his young man adventures while we were eating. It was routine for him to sit down and cross his legs one over the other and hang up his hat on one of the chair's corners. Somehow the old hat, ruined by the sun, was still my grandfather's favorite. Then he would ask for a cup of coffee, followed by cracking his fingers one by one until the end, and finally ask if we knew something about his teenage years. He started his conversation and we ate. My grandfather always sat down at the head of the table with grandmother on one of his sides followed by my mom on the other side. I sat on my grandpa's contrary side [opposite him?]. Elizabeth was always at the middle of the table when grandpa visited. Normally, she sat at the head of the table filling my father's empty spot. My youngest sister, Madeline, would always sit right next to me; I guess she found in me a father figure. My mom and grandmother took turns to provide us with tortillas or whatever we needed to enjoy our lunch. I just loved those days when grandfather and grandmother came to visit us. After a few hours of quality time and visiting, I had to get ready to go to work. Since my dad had passed away I had to work even more than when he was alive. I consider my mother a fighter. She is a loving and responsible mother, always looking for ways to provide what my father never could, a responsible parent.
Corrected to here
A few minor problems with punctuation which you should be able to easily fix.
Student or Learner