In this tutorial, we learn how to increase and decrease half double crochet. First, work a half double crochet in your stitches. Do this to create the first row, drawing through the loops and inside the first row. To increase a half double crochet, you will do the same thing as a single crochet, except you will skip on loop. Double crochet to the other end and then you will be ready to decrease. To do this, you will simply remove one of the crochet loops while you are crocheting and you are done! Enjoy crocheting and if you mess up, just try again.