[Vocabulary] Sharpen your handwriting.

[beachboy]

Suppose I want my 12-year old son to write something. He has a beautiful calligraphy, but sometimes he's too lazy to write, and the letters don't come out so beautiful. Can I tell my son (before he writes it): "Bobby, please, sharpen your handwriting"? Are the more common ways to say it?

 

[GoesStation]

It doesn't work very well. You might ask him to clean up his handwriting.

Say he has beautiful handwriting. There's no article. "Calligraphy" is artistic, crafted lettering, not everyday handwriting.