i have described my friend's room
My friend's room is large and well organized. it has a modern furniture, nice sofa with chest in the back of the sofa, an Iranian carpet in the middle of the room . a table in right side of the room with chair .curtains hung on clean windows colored by sofa's color. wall was painting with shiny color with a contrast with a sofa color
Punctuation does not have a space in front of it, and is followed by a space. The first word in the sentence starts with a capital letter.
You need to study the use of a, and and the - you are missing them where they are needed and putting them in where they are not.
It is not good English to use the same word so many times close together. Look for other words to use.