Yikes. That kanji looks so tough to write. XD
There is a simpler version of it you can use for age: 才
Actually it's quite easy after writing it with correct stroke order. Believe me there are way harder kanjis, this one is still easy.
Oh boy, my high school Japanese teacher never mentioned that 才 and 歳 are interchangeable, yet the former is only used by children yet to master the more challenging to write 歳. I feel so disillusioned right now.
Why is this sentence in vacation section?
So depressing this lecture.
So.. なります means is "going to turn"?