Hey, welcome!

Everyone's really friendly here. There are a lot of people like you, myself included, that have come here looking for help and inspiration for their maps. We all have varying abilities and no one has been trolled. People have been quite helpful. Plus, don't be so hard on yourself. No one's work "deserves" to be trolled

As for the copyright thing. The way I see it, your work is your intellectual property but as Korash said many people use the Creative Commons licence for their work here. I suggest you make a post with your work and state somewhere or in your sig what licence your work falls under. This may help: Choose a License