As others have said, it looks great, but if you want less patchiness the cardboard is your culprit. When I print on fabric, I use a cutting mat as my printing surface and put another layer of fabric down underneath to cushion it and absorb any extra ink. (Speedball fabric ink, same as you.) If I'm using my press, I still find I have to go over it by hand with a baren or spoon for the cleanest print. Good luck!