I've made a Public Video Pledge for the 2014 World Cup Challenge

http://m.youtube.com/watch?feature=youtube_gdata_player&v=9Ca0qEHj6Ec

0:12  하루(언젠가) 한국에 가고 싶어요.

you meant you want to visit Korean someday? then you should use 언젠가는 or 언젠가 instead 하루. 
하루 is one day or a day. you cannot use it like someday if you want to say someday in future, 언젠가는 is exactly for that expression. 

your pronounciation is really good. It's clear and correct. 
just when you pronounce 그래서(so) 그 is not like u is more 'ee'