As with most things, practice makes perfect. Try recreating some of the scenes from the show using software like inkscape. Or at least poses. If you're attentive, every new vector helps you learn something new - soon, you'll just as easily make your own stuff.
I just HAD to see this........Dang......I want to buy this...but it'd feel like I'm cheating......then again.....I don't know if I really give a crap about that.... CURSE YOU FIRST WORLD PROBLEMS!!! DX