I will start my Udemy career pretty soon. I am a Game Environment Artist and I wanna make Environment Art Tutorials. I wanna create a moodboard and use that as a reference and making a 3d environment from it. Is that a copyright problem? because I've seen some people doing it on Udemy. I don't want to create a 1 on 1 copy from the original but instead I mix some of them together and create something new from them. then my question is... is that a copyright problem if I show my moodboard in the tutorial?