The best thing you can ever do for an artist, is to purchase their work. Praise is wonderful, but it does not make it possible to pay the bills. If there is an artist, whose work you love and if you can afford even the least expensive of their works, buy it. Take it home and marvel at it every day. Let it add beauty and wonder to your life. You will be helping that artist keep the roof over their heads, put food in their stomachs, clothes on their backs and given them the ability to make more art for you to dream about.