[bopf]

Never too late to do this. Just keep in mind that you are competing with super high skilled and inexpensive web developers from Eastern Europe and Asia. I would go down this route, build up great ratings on freelancer.com for example and slowly raise my rates. At the same time, I would always try to work on my own web projects with the goal to make an income from these. There are enough ideas out there and only very few who have the skills to bring them to life. If you are not sure what to build to make a living from your own projects, just read growthhackers.com - lots of stories there on how to build something that has a shot at becoming big.