Improving descriptions by looking at photos or even a room

Hi, so as someone who is an aspiring author and a newbie fanfic author, how do you guys describe your setting by looking at pictures? I have a VERY hard time describing things. I don’t know how to be descriptive enough. Like, if I wanted to describe a room full of paintings, I don’t want to keep saying "the paintings hung from the walls" over and over, you know. How can I look at a photo and use that as a reference? How do I describe furniture without saying over and over "the chair sat here" or "the couch stood there." I understand those are fine at times, but I want to be descriptive. Thanks in advance!