When i was young, i sometimes wore fake glasses to cover the dark circles under my eyes. You know, just clear glasses as i had perfect vision then. I also would put on scarves or try to wear some jeans or something that made me feel better and often hid a bit under a baseball cap that was still cute.
As i got older and my health improved, i looked alot better. Now, i've aged a good 20 years in the last year and 1/2. I look horrid, I'm rail thin, skin all wacky, dark dark circles, face all saggy and sad, skin all over aged rapidly. Not much to do now, but i'm so down, sadly i don't really care. Most of my clothes really don't even fit as they are falling off me but i can barely ever get out.
I think sometimes we are harder on ourselves than others are but i also get that sometimes we do look sick. If you have any clothes that you like, that is something you can do to feel better about how you look. Sometimes just wearing clothes i liked did make me feel better. Even new tennies could make me smile in the past when i was more mentally healthy. If i could find my clothes or could go out, i might try to dress a wee bit better now. now, i'm lucky if i can bathe as much as i would like.
I hope you can find something, even if it's a just a sweater that you like could help just maybe a tiny bit.