I've been reading webcomics for so long I've found that they all fall into one of two categories: those where the artist has innate drawing skills, and those that don't.
When the artist has innate skills, they could draw a scribble comic and it'll still be appealing. So even if it does have flaws (loose lines, strange anatomy), they're overlooked because the overall comic looks effortless. It just flows naturally- even it it's stick figures!
On the other hand, there are comics where the artist isn't naturally gifted. Even if they throw a bunch of effects onto it, it looks stiff and forced. A large majority of them fall under the "my first manga" category...you'd know it if you saw it.
From what I can see you've got natural skill so I wouldn't worry. I think the key is just constant practice, every day if you can, as well as studying the pros.