My brooder set up is this.
I have a fairly big sized tub and I place paper towels down for the first week or so. And I replace the towels as needed. I have a heat lamp plugged in a day before the chicks need it so that is it just right. I have sugar water for the first day- I also dip their beaks into the water so they know where to drink. I also have a small dish of chick food.
It didn't sound like you did anything wrong.
I have a fairly big sized tub and I place paper towels down for the first week or so. And I replace the towels as needed. I have a heat lamp plugged in a day before the chicks need it so that is it just right. I have sugar water for the first day- I also dip their beaks into the water so they know where to drink. I also have a small dish of chick food.
It didn't sound like you did anything wrong.