Welcome to Write Words, Santana.
I have no problems with sequels, especially in fantasy childrens and other genre books, eg. crime, where they are
de rigeur, if the shelves in Waterstones are anything to go by. Persoanlly I see it as good training for a writer. In bk.1 You have the characters and their world set up and in Bk.2 can concentrate on developing their personalities and antics. You might find that after bk.2 or even Bk.3, you could combine the stories into a much stronger book.
All best with it. Hope to see your work on the Group forums at some point.
- NaomiM