None of these cover the copying of a painting to practise painting techniques or for showing your painting skill.
The factors used to determine whether "the use made of a work in any particular case is a far use" are:
(1) the purpose and character of the use, including whether such use is of commercial nature or is for nonprofit educational purposes;
(2) the nature of the copyrighted work;
(3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
(4) the effect of the use upon the potential market for or value of the copyrighted work."
Go to Full Artist's Copyright FAQ.
Disclaimer: The information given here is based on US copyright law and is given for guidance only; you're advised to consult a copyright lawyer on copyright issues.

