i am not a cleaner but i think i can comment some things for cleaning and as I am a typesetter i can for ts
I hope u dont mind that i wont go through page by page as you said u did 20
cleaning:
page 1
2 dirt points near the word "art"
page 2
the greys at the right side of the page shouldnt be there i guess
page 3
this time greys on the left -- question did you debind the book before scanning or did u just put the volume on your scanner, doing so creates annoying shadows and makes it lq if they are not removed
page 6
shadows on the side of the page again (wont mention them on the following pages)
page 8
is not rotated looked like others werent too
typesetting
page 3
panel 1
bubble 1 use center allignement not left
bubble 2 size too big
bubble 3 use center allignement
box not centered , yamu not centered, other text too big (it cuts into the box, change text layout)
panel 2
bubble 1 change text layout
bubble 2 the bubble is partially grey clean it if it is dirty, reduce size
panel 3
check if the raw is written in red if not stay with black, change layout of the text
panel 4
reduce size
panel 5
bubble 1 not centered, size too big
bubble 2 bubble not cleaned size too big
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that was it for the first page for the next comments i will go over and point out mistakes which are special and not go through it like the page before even if you made the mistakes like above.
page 5
write the tn note in black, give the hint of the tn note, reduce size of it
dont write vertical
a rai... -- not sure if that was really written in the raws if not u should avoid adding it
i would not add the sound as it is clear by looking at it, else redraw or give it as a TN
for different pages/bubbles - check which height space was chosen between the lines it should be auto
2nd chap page 2
u wrote the english words between the jap of the yelling if the jap are the english words, then clean out the jap
page 3 2nd chap
dont write the monster names vertical either hyphen them or reduce size here probably hyphen
chapter 3 page 3
the green is difficult to read
a short look over if you have questions feel free to ask