Editing a bio is as hard as writing a bio.

Here's an example of a crappy bio.

this is mary. she is very lonely. them she mets zach and her world changes.

The mistakes in this one are obvious. The grammar is just sh*t, as the person did not use capitalization, commas, use of detail, or proper grammar.

Here's a less cringe-factor bio.

Mary has been lonely her entire life. She wants a change, and she gets that change when she meets Zach, and her world becomes a rollercoaster of emotions, happiness, and love.

This one has a noteable change. The use of proper grammar, punctuation and capitalization is correct, and it sheds it bit of light on the characters.