Also, can anyone tell me if it's worth it to buy all of the mangas??

As an artist, I don’t think there’s any need to criticize anything! It’s ur artstyle and all, I do believe that working on anatomy would be the only thing necessary.

As for the manga, it really depends, I have almost all of the volumes and the after school manga as well, I only bought them bcs I wanted a collection and merchandise of my top fav series, I believe getting the official art book is better