I made a trellis stitch baby blanket for a friend as it is a simple pattern easy to memorize and which can also easily be adjusted for size. Gauge only matters to get the pattern to look right; the size can be any size you want.

I used three skeins of Knit Picks Brava Sport on size 5 needles. If you use worsted weight yarn, you will want to use a larger needle (probably a size 8) and cast on fewer stitches. As I noted in the pattern, the trellis stitch uses a multiple of four stitches, so your blanket will need to be a multiple of four plus however many stitches you want for the border.

Also, I learned the hard way that tracking the repeats with place markers is a good idea. I had to frog my blanket and begin again because I somehow dropped and later picked up a few stitches in an early row and didn’t notice until it was too late. When I restarted the blanket, I used place markers every eight stitches between pattern repeats so I could avoid repeating that costly mistake. Place markers aren’t essential for the pattern, but they certainly helped me.