That is a beautiful quilt and will be enhanced by your hand quilting. It will need to be quilted evenly so that when washed, it continues to look nice. Searching on the internet brings you tons of patterns that you can enlarge or trace to fit your spaces. Also, the library has books that you can copy the page you want. Or stencils. I keep several books in my own library of just quilting designs. These are reduced or enlarged to fit my spaces. Good luck!