Moss in even stitch pattern

[KilbyBeauty]

Hello,

I am a bit new at knitting. I am knitting a baby blanket for my best friend. I am using several different colors and different stiches for the pattern so I am knitting a bunch of different squares and then sewing them together with mattress sts. Simular to this: http://www.spudandchloe.com/blog/201...-free-pattern/

But I am not knitting it row by row, I am doing individual squares.
In my pattern, i figured out that each squares will be 16 sts CO by 16 rows. Here is the problem, I really want to use Moss stitch but it is in multiple of 2 sts plus 1.

How can I modify the moss stitch for an even number of stitches so that all my squares will be the same size? Or am I just completely overthinking it and there is an easier way to complete the pattern?

Thanks!
Kilby