There are a lot of people on Tapas who staunchly believe that their work is fantastic in quality and that it's just Tapas keeping them down based on their style or subject matter, but it's actually simply that their work isn't very good. You are the rare instance of somebody who I really do think your work is plenty good enough in actual ability, and that if you just either swapped over to digital inks and colours and made a shiny digital logo, or if you tried pitching your work in children's graphic novels, you'd find you did a lot better. Have a look at some popular kids graphic novels like Witch Boy, The Nameless City, The Stone Keeper, Speak Up! etc. I think your anatomy, perspective, backgrounds and overall presentation are getting up there, because you're consistent and you have a strong overall base of skills.
Maybe have a poke around at some comics and a think about how you want to develop your work. It's okay to have it as a leisure project though, so don't feel pressured to try to become a pro comicker (it's a hard career and doesn't pay amazingly well!) Just... you know, if you ever wanted to... I think you have what it takes