Crafting proper compliments is not that difficult, but I'm struggling with the "sequiturs" / follow-ups, in face-to-face situations.

1) When giving a compliment, and being replied "you're so sweet" or something to this effect... what is the correct follow-up? (including body language). I never know what to say at this point.

2) And then when getting a compliment, I'm never sure how to capitalize on it either.

Both to go further with the woman, and currently looking for respectful LTR. Though, out of curiosity, would like to know if there would be any difference in an one night stand approach...