I think skin color is an important factor in someone's image.
>> Correct!
OR: I believe that skin color plays an important role in someone's image.
And obviously there are images that many people prefer.
>> Correct!
OR: Of course, there are images that many people prefer.
In Korea, people with white skin, small face and thin body are easy to be considered beautiful.
>> Correct!
OR: In Korea, people with white skin, a small face, and a thin body frequently are considered to be beautiful.
Of course people don't think someone beautiful just by this kind of image.
>> Correct!
OR: Of course, people do not think someone is beautiful based solely on this image.
Also, skin color that makes someone looks more beautiful can differ by people.
>> Correct!
OR: Furthermore, the skin color that makes someone appear more beautiful varies between people.
Personally, I feel boys with darker skin more handsome.
>> Correct!
OR: Personally, I think boys with darker skin are more handsome.
Whereas my friend prefers boys with white skin.
>> Correct!
OR: My friend, on the other hand, prefers white boys.
So I think skin color affects whether a person is regarded as beautiful and the skin color preferred can differ by culture and people.
>> Correct!
OR: So, I believe skin color influences whether a person is regarded as beautiful, and the skin color preferred varies by culture and people.