Hello,
How does someone write an artist (painter) bio? What info must be included and how long should it be? Any helpful suggestions would be appreciated.
Thank you.

I am sure that you can find examples to follow by clicking on the following link:

artist biography - Google Search (http://www.google.com/search?hl=en&safe=off&q=artist+biography)

I'm sorry that no one answered your question sooner.