How to respond on compliments?

''I know.''   reply

if you will buy me the jean skin ill accept your compliment   reply

"Thanks for the compliment"   reply

I'm sorry, I couldn't quite hear you . . . could you please say that again?   reply

Just a sincere thank you is good. but to level up you can return the compliment. "You're hair looks nice today." "Thank you! I really like your shirt." or you can say thanks and tell them what it's called/where you got it. "You smell nice today." "Thanks, it's a lotion from bbw."   reply