The steps to make a swatch blanket are very easy: choose your yarn (in my case pure natural hand-spun Romanian sheep wool), choose the right size needles (size 6, European measure) and pick your stitches. You should best pick stitches that result in about the same size swatches for the same number of stitches and rows. I casted on 40 stitches and knitted for 40 rows, and the resulting swatch was not perfectly square. If you want, to can knit some more and make square swatches. When I had 9 pieces, I washed and blocked them, stitched them together and made a crocheted border (3 rows of half double crochet). I washed and blocked again. And that’s it! My simple and fun to do swatch blanket!
If you want to do this blanket and you want to use the exact stitches that I used, I uploaded photos and add links to websites where you can find diagrams / tutorials. The middle piece is just plain knit :)