From the looks of your practice piece, I’d say you’re doing pretty darn good. When I first started FMQ on my DSM, I took a hands on class with Leah Day. She had us make a stack of 12x12 sandwiches with solid fabrics. We practiced different designs on the sandwiches. To this day, I still keep a handful of sandwiches handy and use them to warm up, check my tension or even try out a new design. Have fun.