Size that I have written is 32” wide x 36” long. If you wish to have a different size then,
For the width: you can choose a different needle size; remove some of the repeats in each row or add a few extra repeats in each row.
For the length: keep knitting the pattern until desired length is achieved.

I worked this pattern with Loops & Threads Snuggly Wuggly baby yarn, however you can use any worsted weight baby yarn

Happy Knitting!