How to make a word search

Today on novel we had to hand on our vocabulary assignments. Mine was a  scrambler or word search. I had to take twenty words out of our novel Island Of The Blue Dolphins, then had to put the, randomly around my page of graph paper. I then put random letters all around the words so they formed a perfect square of 20 by 20 letters. Then I put all the words down the side for someone to attempt my word search.