The blocks in my Pinky The Piggy Blanket are joined using the Join-As-You-Go technique, where each block is made individually and joined to the previous blocks with sl sts while working the last round. So, you can easily add or omit blocks if you want to make a different size.
Here is a short video to demonstrate this technique:
You can also check out my other tutorials for Joining-As-You-Go:
