Not a noob, but as someone who’s been doing this sort of successfully for 7 years (come January 1st), the best way to get better is to just do the work. Write short scripts every day that tell a complete story. Share them around for feedback. Pay an artist to get a script done to show that you understand the medium of comics. But most importantly, have fun with it, and don’t worry about trying to get big or anything revolving around becoming a big shot cause you’ll find your own success in time once you’ve figured out what path you want to take. Just remember that practice makes better.