If you think that it’s narcissistic to shamelessly accept a compliment, well I wholehearted disagree. People are allowed to marvel at themselves. Not enough folks do it if you ask me (which you didn't, rude).
You’re kind of amazing and probably do that double-jointed thumb thing that I can’t do which is awesome so why not accept that awesome one-of-a-kind thing that you can do? If you’re still struggling on how to accept those “you” things you do when people bring them up. No worries I, have got your back with a fool-proof scenario based guide.
Complimentor: I like your scarf.
You: Thanks, I like it too.
Complimentor: You’re the most beautiful person I’ve ever seen.
You: Thanks, I’ll let my grandmother know her genes didn’t go to waste.
(Other option) You: Thank you, my grandmother thinks so too, so I guess it must be true.
Complimentor: Great bangs!
You: Thanks, *touch bangs in a flip-like motion* they practically blow-dry themselves.
Complimentor: You’re just plain amazing.
You: Thank you, I try.
OR, a personal favorite that can be used in any situation:
Thanks, I’ll effing take it. *then walk away leaving all humans stunned by your graciousness, ya cool girl*
I give you all #props ever, friend.