Please capitalize where necessary: i have played with some of the details, such as the curved cutting of the seat/legs and the angled bowing of the legs, which helps to give the stool a more three-dimensional appearance.
A: I have played with some of the details, such as the curved cutting of the seat/legs and the angled bowing of the legs, which helps to give the stool a more three-dimensional appearance.

Please capitalize where necessary: the value is given in mg/m3.
A: The value is given in mg/m3.

Please capitalize where necessary: 31 wherefore i say unto you, all manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the holy ghost shall not be forgiven unto men.
A: 31 Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.

Please capitalize where necessary: the word clearer can also spot-check the student.
A:
The word clearer can also spot-check the student.