I might now help very much... but I can tell you what I do? Maybe that will tell you if you want to do it or not and help dwindle down the possibilities?
I don't really write stories much, but when I do, sometimes I just write it in the main characters POV, then I just make it so they look in a mirror or something reflective and write something about their features. Such as, (okay, I'm just going to freewrite something really quick, so sorry if it sucks)
"I glanced in the mirror before I left the bathroom and my gaze traveled to my brown hair that traveled to below my waist and seemed to shine in the dim light, then I found myself staring at my eyes. Everyone had always told my that my eyes seemed to have a warm texture to it, and I guess they could see that as they always described my eyes as a light brown, almost on the verge of hazel. Yet when I looked in the mirror, all I saw was a pair of brown eyes that had seen too much pain and sadness. I was harshly thrown out of my thoughts from a banging on the door and my annoying brother's voice telling me to hurry up."
yeah,, something like that? Sorry, I'm not reading over that so please excuse any spelling or grammar errors, but something like that is how I usually do it. Unless I'm writing from a different character then I explain the main character from the POV that I am writing in for a while.
Sorry, that was really long.... but hopefully it helped somewhat?