Pg 2:
"... Kokona-chan and Kaede-san can can come over"
Try to keep the letters of the same word on the same line, like Kokona-chan should have the n on the same line as -chan (It's okay if you move -chan to the next line). Same for "..." (ellipsis), it makes more sense to keep the dots together as 3. This problem's also on a few other pages. If you can't fit the whole word onto a line, then split them up by syllables, i.e. "cooking" -> "cook-ing" or "barbecue" -> "barbe-cue".
Pg 5:
Text at the bottom reads "When roasting marshmallows on sticks, hold them about 10cm away from the fire.".
Pg 6:
Text above Kaede reads "How deep does the skin go..."
Pg 9:
Hinata's font is a bit too small to read. Feel free to add line breaks between words to space them out better so you can use larger font sizes.
Amplify's comment here has some good guides on typesetting you can look at.