The order is complex, but generally its just the reverse of how it is done in english ; pretty little girls school ->school girls little pretty.
lipu ni li sina -- this book is you.
lipu ni li lipu sina -- this book is your book.
ni li lipu pona -- this is a good book.
As a start its easiest to just read the "noun groups" in reverse, if english is your first language.
Follower of the official dialect of toki pona as presented in the official book; Toki Pona, The Language of Good by Sonja Lang.