I think it looks great but a few details - the two people's skin tones are different, I suggest you raise the brightness and contrast on the ulzzang to match Jinyoung. Same with the stack of books; it looks duller. The wood floor is also off; try enlarging it so that the top part/line/border of the wood runs the whole length across the poster. Other than that, I really love the concept and theme!

It's really cute! May I ask what font you used for My English Tutor? :3

it's cute^^

This is so cute~
Its so good as well xD
I like it~ <3