I'm not quite pro yet, but have had a few images in this weeks mags. I send my pictures to a picture agency that specialises in the subject matter I deal with. They have also recently started to give me jobs/assigments to do. I've had 2 today, but I don't get in til 12:30am (night) and finish sorting and uploading them normaly by 2:30am. If I was to get a real corker, I'd probably by-pass them and sell it myself.
A fellow photographer told me that if yo want to make good money, photograph weddings, personaly I'd find them boring and worrying, just incase it all went horribly wrong. I was given a subject to photograph a few nights ago and didn't. However I got a better one instead, so they wern't to bothered.