Yes you can show your work here,  although just like everyone else have pointed out, you need to at least rank up to junior member to be able to do so. Aside that, nothing else stops you. Know also that you can monetize your skill here if you are serious about it.

This forum encourages creativity. There have been lots of contests here in this forum that has required members here to showcase their skills. Winners of these contests are usually given rewards at the end of the contest. You will love it here.