There's a myth that the "poor man's copyright" is the right way for artists without funds to secure the safety of their work. It is not. The best way for you to secure your art is by going through the proper channels.
Pricing your work, as a creative, can be confusing if you don't know where to start. I can tell you; it doesn't have to be complicated at all. Once you've got the method out of the way, everything will seem much more transparent and more natural. Not only is pricing your work a simple task, but it's also the one piece of thread that unravels the rest of the business management blanket.