There was one model of Black Pearl that is made from a game rip.
Someone pulls the data from a Disney Video game, and extrapolates a paper model.
These types of models tend to be less detailed, less complicated, and "crude" (as Beard says).
I think this may be that model...not sure.
This is not your fault...your build looks fine.
Its the model that most likely doesn't impress.
Use it as a learning experience...even the worst model can still teach you things.
Then move on to a better version?
Not sure if Disney Experience offers a Pearl, but they do have the Wicked Wench:
https://www.disneyexperience.com/mod...ench_model.php
And if you are feeling really confident, I'd say try Uhu02's version.
Unfortunately, it looks like it has been removed from collection.
uhu02 ペーパークラフト
I don't know why...maybe he is updating it?
Not all his kits are in the public domain anymore, and many of his kits are being copied and sold (illegally).
So be careful what you purchase online.