Before I get into the “how”, let me tell you about the “how much”. In traveling the world, I spend an average of $2,000 a month. That includes accommodation, transportation, food, etc. I don’t have a home, so that $2,000 is in fact the entire extent of my expenses. Thus, to keep myself from non-under-bridge housing, I need to make that much each month… but preferably a bit more. And, before you ask: no, I don’t have savings, I don’t have a trust fund, and no I don’t have a sugar mama (although I want one).
A pretty picture is not enough. It needs to be high quality and it needs to be original. For magazines, you need to consider issues such as leaving space on the image for word placement, positioning your subject off-centre so it doesn’t fall down the page join, and possibly placing the subject on the right-hand side of a landscape shot for maximum impact.