Experience comes through practice and experimentation, so go crazy! Although Inkscape can be a bit tricky at first, once you've got the hang of molding the shapes (usually a simple circle's a good starting point)into something that works I'm sure you'll be fine.
Also there's some terrific filters that come with the package which can give the artwork an interesting makeover.
Anyway, Crazdd, I look forward to seeing what you come up with.