Thank you for your kind words.
친절한 말씀 감사합니다.
It means a lot to me
그건 저에게 정말 의미있는 일이에요.
But I'd like to say
친절하게 대해 주셔서 진심으로 감사합니다.
(저에게는 정말 뜻깊은 일이에요.)
(=it means a lot to me.)
You could skip the 2nd sentence in the brackets.
But whatever you saying, they would love to see your effort.
Good luck.