First off, kudos for going out and starting to make a comic. It takes guts and dedication, but it can be really rewarding.
So, what's the premise of your comic? Don't have to give us the whole thing, just a line or two explaining the general idea of it.
I'm guessing it's a story about 18 boys?
1) I'd caution against that. 4 characters is a lot to handle for most writers. 18 is going to be crazy, especially if they're all part of one story line. If you could narrow it down, you'd save yourself a lot of time, effort, and headaches.
2) Have you seen American Dad? They had an episode with B12 or B11 or something, with a boy band with twelve members. If your story is similar, people will most likely point that out.
Art-wise, a couple things:
I'm guessing you're trying to introduce all 18 characters? If that's the case, it's really confusing as to what their names actually are. Most have two names in each box, and they're both crossed out, which makes it hard to read. The only thing I can read consistently is 'Ryusuke', which is kinda confusing since it's in all of them. If that's your signature, just put it once at the bottom of the whole page, not in every single box. You gotta remember, this is a comic. It's words and pictures working together. Tell the story. If this page is about learning their names, then those names are very important and should be easy to read and understand.
Another problem you're having is that a lot of the characters look really, really similar. The two in the bottom left corner, for example, have the same black hair and the same red and white stripes. Since you're only going black and red, you lose a lot of options for making them different, like a blue shirt guy, or a brown haired guy. With so many characters, you need to really work at making them individuals. (Or you could just cut down the amount of characters, it'll make your life waaaaay easier
whee )
I'd bet dollars against rubles that you're eyeballing (ie looking at another drawing and copying it). Now, there's nothing wrong with that at your age. When I was thirteen I did that too. I'm sure most of us here did. And if it helps you, use it. Whatever works for you.
But.
Start looking into learning how to draw. Go to a bookstore, the library, there's tons of tutorials and sites on the internet. First, I'd recommend learning how to see the body as shapes. Once you start understanding basic shapes, building a person from your imagination is a lot easier. Eyeballing can get your through a lot of things, but what happens if your story calls for something you can't find a picture of and you have to draw it from your head?
If you were older, I'd recommend life drawing (drawing real life things as you actually see them) but you're young, and drawing should be fun! If you love anime and manga style, then go for that! There are hundreds of how to draw manga books, and one or two of those would help you understand basic construction, which is a big first step and would help you a lot.
I know I can sometimes come off as harsh, but I really don't mean to. It's great that you're making a comic! Keep at it, and with a couple tweaks you could have something really great!