If you want to submit more than four pages, you can stack them on top of each other, i.e. save your images so that one image file is actually two pages. The reason for the 4-page limit is mainly to keep people from spending too much time on their intro story and encouraging them to get to battle as soon as they can. With how fast you've been posting your pages, though, I don't think that's going to be an issue.
As for your art, it seems pretty solid to me for the most part. I'd agree with Wei that your lines look kind of sketchy; it can work sometimes, but I feel like there's some inconsistency with your work. Look at the rabbit at the top of your most recent page. The lines in his top half look pretty solid, but the linework in the bottom half looks less confident and put-together. I think the important thing to keep in mind is that you don't want your linework to look like you left it vague because you didn't know how to draw something correctly. (I hope I'm making sense; I just woke up and I feel like I'm still half asleep XD)
Also, I have mixed feelings about the coloring on your comics. It gives everything a sort of surreal, dreamlike quality, which works if that's what you're going for, but it might not work in every situation, so watch out for that. You mentioned that page 2 was supposed to be the more vibrant, colorful style you'll be going for in VOID, but I don't get "colorful and vibrant" from these pages. They still feel kind of washed out and monochromatic, since you're using a limited color palette. The way your colors bleed into each other, especially over line boundaries, definitely adds to the washed-out feeling. I'd love to see some really well-defined color boundaries and more contrast between objects, especially between foreground and background objects.
Thirdly, watch your posing. The characters look stiff and awkward in a few panels, specifically the last panel on page 1, the first panel on page 2, and both instances of Nacho on page 3. The fact that you're using action words to indicate what's going on (like "Turn" and "Leap") shows that your art isn't communicating that clearly, and that's something you could work on as you go. And I just don't get what's going on in the second panel on page 3. It looks like he's doing some sort of flip while hanging onto an invisible grappling hook or something. It feels like the angle of the tree doesn't match the angle you drew Nacho at.
One final thing, and this is something I comment on frequently—BACKGROUNDS. Right now, I have no sense of where your comic is taking place. A few trees, some scattered bushes, a blank horizon line—all of that gives me nothing to instruct my sense of place. There's so much you can add with detailed backgrounds, and I'd like to push you to do more there. Think of them as environments rather than backgrounds. Try to give us a feeling not only of what's around your characters, but where they've come from and where they're going. Tell us a story with the objects around your characters. Think of your panel composition, as well—has Nacho been chasing the rabbit for a long time before the start of this comic? Maybe the top panel should be arranged with a lot of space to the left of the characters that shows how far they've travelled from the city (by showing a city far in the background, with trees or bushes or grass or whatever they've been running on between them and the city). On page 2, I get the impression that the last panel is supposed to communicate that Nacho is in some sort of new/strange environment. Or maybe just that the tree is big and weird. The problem is, you haven't made
me feel impressed with the environment. As the reader, I don't really get why Nacho is saying "Whoa," because the environment doesn't look all that different or unique. And if the tree is supposed to be intimidating or something, you need to communicate that more clearly. Is it a really gigantic tree? It actually looks pretty small the way you've drawn it. Is there supposed to be something strange about the whole environment in that panel? Make sure we get exactly what's going on.
Keep in mind, all of this feedback is stuff you can work on as you continue making comics on VOID. Don't feel like you have to do everything perfectly before you submit your character or turn in a comic. (I learned that lesson the hard way very recently...) Like Puzzlething said, you definitely have the skills to get your character approved, so feel free to submit what you already have and get to challenging other artists to comic matches. But I hope you came to VOID to improve, and I hope you take all of this advice to heart as you go forward and continue to draw.
Oh, and welcome to VOID!
The Great Switcheroo
Celif vs. Brett Black
@ 3:46 PM Apr 30th