Help with hot pad! Please!

I have found a pattern for a dishcloth that I would really like to make into a hotpad and I saw the pattern and video for the heart hotpad and it inspired me. I was wondering, would I just double the amount of cast on stitches in order to get it correct? Any help would be appreciated. I am a fairly new knitter and thought that I would try to advance my ability but have been too scared.:knitting:

I probably would use a double strand of yarn and a somewhat larger needle, but would have to see the pattern to be certain.

It is a basic knit and purl pattern for a paw print using size 8 needles and casting on 36 stitches if doing it as a dishcloth.