Stitches and techniques used:
Insert hook in next st, yo and draw through all loops. Double crochet Insert hook in next st and draw up a loop (2 loops on hook), yo, draw through both loops on hook.
Double crochet Invisible decrease [ 2-dc inv dec]
Please note that when making the invisible decrease you will be working in the front loops only of your two stitches.
Insert your hook into the front loop only of the first stitch. Do not yarn over and pull up yarnas you would in a traditional decrease. Insert your hook into the front loop only of the next stitch. You will need to turn the tip of your crochet hook downward to do this. Then swing your crochet hook up, and under the front loop of the 2nd stitch. You now have 3 loops on your hook. Yarn over and pull the yarn through the first 2 loops on your crochet hook, leaving 2 loops on your hook. Then yarn over again and pull yarn through the last 2 loops on your crochet hook.