Well, since it is only a hobby, there is no need to do "Anything" in particular. If you wish to keep up with technology, then yes, I would add more polygons. But if you just want to make good looking art, on your own terms, then there would be no need to. Just keep on practicing.
Thanks I prefer it use to be for PC, I still I do not have a plan specified for this design, I am still very new to this on game design, so far I have no plans I do it for inspiration only as a hobby Does your do you recommend that I use more polygons?