So first, I think your art looks good enough!
and second, we never feel like our art is good enough and that was something that hindered me for years to start my own comic so honestly, jsut go, make it happen, you will se fast progress of your art the more pages you do!
I regret so much i didnt start years ago with drawing more comics, because I just felt like it wasnt good enough or I couldnt draw certain things good enough etc but now that Ive started, sure I feel like crap a lot of times about my art, but the most important, im having a lot of fun finally being able to put the story of my characters into a comic, and Im learning so much on the way