So you have decided to go for it because you have established that you truly have that something extra to go Pro and are ready to tackle all that comes along with running a business. The next step then is to get your craft down pat and practice, practice, practice!
Don’t make the mistake that you are going to book jobs and make a decent living out of your photography by continuing the same workflow you use as an amateur. Just because the majority of photographers use DLSR’s now it doesn't mean you can disregard needing to have any knowledge of how your camera functions outside of auto mode. As a Pro, not only do you need to be able to handle your camera as an extension of yourself, you need to a strong command of the basic rules of composition and lighting techniques.
To really succeed as a professional photographer who earns a full living from your work, you cannot be just snapping away with your digital camera gawking at the screen after every single shot until you get it right. I also highly suggestion not basing the bulk of your work flow on “creating” your imagery in post on your computer.
Do your work in camera as much as possible and save your time and energy from having to edit and fix every frame in various programs in post for being able to handle all the other aspects of running a photography business.
Every shoot involves some level of trouble shooting – a Pro is going to know how to quickly resolve any issues and move on to swiftly and effectively create the high quality images expected by a client.
Doing so comes from knowing your craft.