kirbycriticism definitely helps, don't get me wrong. however being significantly attached to your art doesn't necessarily prevent growth as an artist. it's perfectly normal to look at something you created and say, "hey, i drew an amazing picture." strive to get better by challenging yourself in a way that forces you to work a lot harder. don't let criticism from others dictate the art you create. it's art after all.
a bunch of people may love your work while a bunch of people may hate it. what matters the most is that you enjoy it, and nothing is wrong with really liking something you made. like i said, i'm not really qualified to critique something such as this, but i figured i'd give my 2 cents.
If you do art as a hobby, then I'd agree with this.
If you (plan to) do it as a career, I'd care more about what other people think.