That's how I feel about character descriptions in literature. Tread lightly here for this is a sacred space, this is the place of the readers imagination.
So if you find yourself wondering what Matilda or Mr. Narrater actually looks like I'm going to ask you to look inside of your own mind and draw your own picture. I'll do everything I can not to tread on that image you have created.
If I write that someone is "buxom" or "tall" the actual picture of that remains up to you, after all "tall" is a relative term. I'm inclined to provide a generality with maybe a few side hints as to background. I prefer to focus on traits rather than give you a detailed set of measurements or description. You can provide that yourself and have the characters look however you like, I encourage it.
I've always hated that about the movies or tv series made from a good book; suddenly everything I built up in my mind is wiped out with someone else's image. Usually even the voices are miles away from what I'd imagined when I read and reread the story. I've stopped watching TV and going to the movies.
So if you find my descriptions to be lacking it's because I intend them to be, I want you to be able to decide for yourself what the characters look and sound like.
I have plenty of images of tech and equipment over on Patreon, but that's not the same as characters. To me characters are the true meat of a story and how they look, talk and walk should be left up to the readers imagination.
And for the love of all that's holy please don't ever post an image or description of what you think Matilda looks like; that's Holy Ground Highlander.
-Emmeran
(This is all just my opinion and a diatribe on how I personally do things. Other authors do things a different way and that is the very thing that keeps reading interesting.)