Alright, I have your reply.
Your centering is okay. Your font choice isn't entirely consistent, but when you get to typesetting an actual chapter, you'll have detailed font lists, so it's not a big deal. Sizing is also proper.
Your main problem is shaping:
For example, here the "not" should've gone in the second line:
https://cdn.discordapp.com/attachments/ ... nknown.pngHere the general shape of the text is problematic, especially the fact that the first line is the longest one:
https://cdn.discordapp.com/attachments/ ... nknown.png(You might need to change font size to try to fit more words per line. The ideal - not always possible - text shape in a bubble is narrow at the ends, wider at the middle, or at least uniform throughout. Hyphenation can help, too, if nothing else does.)
Or this one:
https://cdn.discordapp.com/attachments/ ... nknown.pngThese are the most egregious ones, but you ought to scour your pages and look for any bubbles or off-bubble text that look problematic along the same lines and correct them.
On these two, the chosen font size was a tad too big and caused the text to touch or get too close to the margins, which you ought to avoid, too:
https://cdn.discordapp.com/attachments/ ... nknown.png and
https://cdn.discordapp.com/attachments/ ... nknown.png(In the case of the first one, you might be able to solve it by changing the kerning to optical.)
The first one of these should not skip a line between the two "Tono!" (that or you set the leading too high), and both should be styled as appropriate for a spiky shouting bubble:
https://cdn.discordapp.com/attachments/ ... nknown.pngIf you correct these issues and resubmit, we should be able to pass you, unless the new attempt has novel issues.