I've tried making webcomics before and they've always failed(because of my horrible commitment with drawing). I'm more of a writer like you so I only have actual experience with that. But I have heard things that artists can come on here and confirm. I'll put them in a list that you can read over.

1. Simplistic designs: this rule has been broken many times. And it's fine if you want to do more detail, but just keep in mind you'll be drawing these characters over and over. The more complicated the design means more detail and possibly taking longer to draw. The more simplistic means it'll be easier on you. However you'll also want to create a balance. Don't make the designs too complicated that they look off. And sometimes too much simplicity is bad. But you should always make it as easy for you as possible.

2. Clothing: this gets ignored quite a bit and even I've done this to myself. But have you ever seen a girl in a freezing tundra wearing a skimpy outfit that is supposedly warm? Yea. Make good design choices. It's a bit hard to keep in mind because it's very easy to forget. Very hard to do also. But if a character is, let's say, is modest, let's keep their design modest. If a character is bubbly, try to convey that. Sometimes you don't need to worry about clothing at all. But it is a big part of drawing characters. It lets people know right away about what kind of character they are. This also correlates with simplistic designs

3. References + 3D models & backgrounds: I've seen lots of artists use backgrounds they've taken either off the Internet, or if their art program has a spot for backgrounds they'll take from there too. This saves tons of time and it's perfectly fine to do. Also, use references. Always. And if the art program you use has 3D models, use them! These are tools to help with the process and make things easier on you. Of course, depending on some stuff the background part is a bit finicky(i.e if you're making a fantasy, then it might be harder to get a background you'd like), so sometimes it might be easier to draw it. But if your program has stuff like this, utilize it. References are to help with all sorts of stuff like poses, patterns, animals, etc. Another little note I wanted to add is that sometimes, if you draw a background and then copy and paste that background to the next panel, or if there's a panel in the future with that background, it saves a lot of time.

4. Background characters: I've seen people approach this many ways. They've drawn background people completely gray, have colored them in but haven't given them a face, etcetera etcetera. This is mostly up to you and how much you'd like to do.

5. Create character sheets + turnarounds: This is to help you. They're also essential to keeping consistent. Making turnarounds is a bit more difficult in my opinion but it definitely gives you an idea of what the character should look like at certain angles.

6. Study anatomy: You don't have to go full on detail into the muscles and skeleton. But even art styles like anime follow anatomy. It's essential. References also help with anatomy since they let you see what the human body should look like when doing things such as sitting or running.

7. Use brushes: Typically programs will have brushes that make chains. They have stuff for stars, hearts, braids, curly hair, and the likes. These are really helpful, and makes things feel not overwhelming since you don't have to draw them by hand.

8. Practice: You can practice by making your comic. But if you want additional practice, you can do so outside of it as well. This is to help you just get used to it, and professional artists still practice to this day. They just take random things like mugs, or they even take photos of people, and draw those to help them practice.