Can I do painting licence on STODENT VISA?

Where are you located? It just might be that you don't need a license around where you will be painting.

You might be able to find information about whether you do need a license to paint where you are by looking it up on the following sites:

http://www.sba.gov/ and SCORE "Counselors to America's Small Business" (http://www.score.org/)

You can find lots of other information on those sites about starting and running a small business.