So I took the time to sit down and read some of your comic, and I think I can see where some of the main problems lie with the comic (although what I said already about taking part in the community is still important!).
First off - you don't provide any build-up as to what's happening. It seems that stuff just sorta happens . . . just because you want it to. You need to create more foreshadowing, more build-up, more insight, so people actually understand what they're reading. When I read Cretin, all I understood at the end of it was that the main character is just generally unpleasant, does stupid shit, and everyone just ends up sad and depressed at the end. There's no point to it. It doesn't have any resolution, or build up, or anything, and what could be considered the climax is just silly.
I mean, my characters are assholes; I'm guilty of that as well. Asshole characters are fun to write about, but they're only fun to read when what they're doing makes sense and is justified. Uzuki is mean. She beats the crap out of people a lot. She insults people. She doesn't understand the concept of "consequences". But she's not mean just for the sake of being mean - she only gets aggressive when she feels the need to protect herself/her friends, or when she really, REALLY feels the need to get a point across. As it's been discovered by some of her companions already, she still has a soft spot and at least a CONSCIENCE, and she doesn't just try to act the "badass cold hearted character" for the sake of doing so.
You need to give your characters more credit than that. Give them motives, give them some kind of backstory that will at least explain - if only a little - why they are the way they are. Don't just take those characters and throw them into random situations for the sake of "plot" - because then it ends up broken and there's no incentive to keep reading.
Second - while this is something that's been pointed out already and is hard to control, you need to work on your grammar. It's very difficult to read your comic as it is because at least 8/10 sentences are broken/choppy/just don't make sense. It really pulls you out of the experience and distracts you, and forces you to read something twice, maybe 3 times before you can even get the gist of what they're trying to say. I know this one is a bit more difficult, but it's a big part of the reading experience nonetheless.
Third - who is this story for? People who don't have any feelings at all, or motives? Because no one can relate to that. You can convince yourself to relate to it, but naturally, people don't. Even the biggest of baddies have their motives and feelings and aren't just bad because "the plot told them to be". This ties in to a lot of what I mentioned in my first point. It also seems weird that they just so happen to live in a world that's set in a modern period, but has dinosaurs and magic and crazy stuff. I'm not saying you can't do that, because it's been done a lot before, but you can't just chuck it in there because you couldn't decide between a modern setting and a fantastical setting - you need to explain these things. You don't need walls of text or pages of exposition, but just offer some kind of ground for these stories to be built on, and be prepare to explain it in a simple and sensible way that your readers can understand and won't find it silly or pointless.
Fourth - and this is the last major point I'm going to make, but what kind of genre are you going for? Are you going for serious, or funny? You can definitely have both - but you're trying too hard to have a joke in every episode and make it comedic, when some situations (especially in Cretin) are just . . . not funny. It doesn't matter how many punchlines you put in there or how many gags you set up, Cretin was CLEARLY meant to be a dark type story and you stuck so many jokes in there that by the end of it, I was just exhausted.
You can have both, but trying to force them together is like trying to force two magnets with the same ends together. Nothing gets done. Nothing gets established. No mood is set. Put in humor where it's appropriate/where it works, but don't try and make jokes where it's not due.
So, characters, plot, genre, grammar. This is what you need to work on. Art is great, but art only goes so far, and no matter how good it is, the story fails it. Your storytelling methods need a lot of work; same as your character development, and the mood you're trying to build. Grammar is choppy and makes the story even harder to follow than it already is. Start paying more attention to how you build your stories and don't make all your characters just end up sad and depressed, or be sad and depressed throughout the whole thing for no apparent reason or because for some reason, plot demands it. That's just annoying to read, because we went through all that reading to end up with what was basically nothing.
That's pretty much it > <