I am showing you the comparison of the first and second ponchos as the sizes go. The smaller one is said to be for a new-born, but is really small. But I did use a smaller hook and thread, so take that into consideration.

The larger one is exactly doubled, I just doubled the foundation chain and instructions. If you would like the pattern, it is a free pattern I will be looking up this afternoon, just e-mail me, or post here.