Doing your eyebrows like this will give you an innocent look.
Doing your makeup like this will bring out the innocence in your look.
This makeup style will give you a sweet, childlike look.
「あどけなさが出る」は、 (something) brings out the innocence in one's look や makes someone look innocent などと言えます。
また、innocent は cherubic(無邪気な、天使のような)とも言い換えられます。
英訳① doing your makeup(eyebrows) like this で、「メイク(眉毛)をこのようにすると」という意味です。
英訳③ childlike は「子どものような」という意味の形容詞です。
その他の言い方:
- This method for doing your eyebrows will give you an innocent, childlike look.
- If you do your makeup like this, you'll look innocent.
- Do your eyebrows like this if you want to have an innocent look.
- You'll look innocent and childlike if you do your makeup like that.