SO MANY good things on this thread. I'll add my five cents (well, ten cents, you know me)
Despite how you feel, never talk shit about your own work on the internet.
I mean it!
You are the one marketing your work, you are your own salesman. Even if this is a hobby--businesses can be hobbies! You are trying to launch an IP here. Not only are you keeping yourself from improving because you've added all this guilt and shame that never needed to be there, you're driving away your potential audience because they will believe you. They will honestly believe that your art is as bad as you say because they don't know any better.
You see your greatest faults, I'm just as guilty about this--but leave it offline and rant to your close friends over Zoom instead. It's OK to openly talk about where you want to improve, or admit faults, or gently discuss frustrations you encountered, but there is a very different air between "I could improve here, but the rest of it turned out great!" and "This is shit, I'm a terrible artist, FML." It's like having that one roomate who's very skinny and always tells you how fat they are because they want to hear compliments. Over time people will stop responding altogether.
Make what you want before it's no longer in fashion.
Speaks for itself, I have stories and comics and music I put off because I wanted to be "better" to do them justice because as a teen those ideas were really important to me. Now that I have the skills to make them, they're...way too 00's to be interesting now. Times move really fast, trends move really fast, technology moves really fast, you can't just stay in one era forever, your stories and your comics -- they gotta move on, and if you don't get them out of your head they will remain in your head never seen and never spoken.
Just because you're a good illustrator and writer doesn't translate directly into comics
Comics are a completely different medium. We tend to talk up the illustration aspect of comic making on this forum more than the visual storytelling aspect--but there is like...a GAP in between illustration and comics. Crossing that gap is actually pretty difficult to do alone if this is all new to you, because for a lot of people who are pro with comics they lean on things that to them are fairly instinctual, and are actually pretty hard to explain. I kinda assumed that my background with children's books would mean I could just...pick this skill up, but no, actually. It takes time to learn. You'll probably fail a few projects as you're learning.
It's a huge slice of humble pie when you have years of experience, and you can draw really well, but can't layout a page logically. When you can write great--but you can't figure out how to pace a webcomic that needs to be delivered in lightning speeds and short as hell dialogue that can't fit on the damn page.
Luckily, if you have some experience you can learn how to learn, but it will take...so many botched pages before you start feeling confident and feeling like you can do something that is clear and exciting as well as stylized and lovely.
Which leads into like...the biggest worst thing I know is true but is so hard to hear
You're not there yet.
And that's OK. But to get there...you just gotta do the work, manage your time, and get some comics out. Yeah you'll see people you know and that you're friends with get really popular while you stay in obscurity. Yeah, you'll spend hours on something that no one will appreciate ever. You'll see yourself grow and it'll feel like no one notices or cares at all. But you have to be happy with where you are. You're not there yet. Gotta celebrate every one of your accomplishments, see the positive things, and the light with where your art is right now.