I find your translation to be often inaccurate to the point which I feel like I must point it out. While I'm also not the best translator myself, I'll point out some discrepancies that can affect readers' reading.
Pg.25
"Oh, um...what kind of character are you?" => "Oh, um...who are you?"
"WAIT...ARE YOU THE PERSON WHO TIES THE UNIFORM?! =? "WAIT! IT'S THAT BOOK'S OWNER FROM BEFORE IN OUR UNIFORM!!"
Pg.26
"Sorry for tricking you before" => "Sorry for causing a ruckus before"
"I've been writing a lot, but I'm working on something I have to keep tucked away" => "And, as I realized that I no longer have to hide myself after the book incident..."
"But I feel like things are pretty laid back here..." => "I thought it'd be actually comfortable to work here"
"Laid back?" => "It's comfortable?"
Pg.27
"Ahh...Of course, something would happen after I've been on such a long vacation" => "Oh...Would I be taking too many day offs after all?"
Pg.28
"She's so deep" => "Women are so deep"
"But original market is very intense" => "But writing original stories requires a lot of ideas"
"Oh, so you're here to collect materials for your books?" => "Oh, so you're going to collect the ideas for your stories while working here"
"(...)time with raw high school girls" => "(...)time with actual high school girls"
Pg.29
"That's a new greeting" => "Then, allow me to introduce myself again"
"Sadi..Sadistic? Sadistic?" => "Sadistic vs. Dere? Sadistic AND Dere? Extreme sadistic?"
"Ah...is that one of the attributes our characters should have?" => "Um...What kind of character is that?"
"It's something an onee-san would do" => "She's a big sister type"
Pg.31
"It's because my eye are so bad, isn't it" => "It's because my eyes look mean, isn't it?"
"I'm looking at you right now,(...)" => "Considering your actions,(...)"
"I love Maika-san's natural sadistic character" => "I love Maika-san's pure, yet sadistic character."
"Don't get so down on yourself" => "It's your unique charming point. Don't get so down on yourself"
Pg.32
"Esdere X A really hard guy!" => "Let's go hardcore with Sadistic dere x Hetare(soft, weak-hearted guy)"
While I covered the most of issues I see in your work, I also feel that there are even more minor changes that is needed to make the dialogues sound more natural.