In this tutorial, we learn how to increase and decrease double crochet. To practice this, first make a chain of nine and then double crochet in the fourth chain from the hook. Increase by one crochet as you continue to go, this will make your item larger and larger. If you find yourself going from an increase to a decrease, this can easily be done. You will simply decrease the crochet as you go, do not skip one or it will create a hole. Practice doing this to get the proper crochet you want to do, then you will have a beautiful creation, enjoy!