I agree. I have done the same thing and it was the tension. It'll look the same way on the back when I'm sewing just two pieces of fabric together. I have to adjust the tension. And welcome!!!! We love new company. First thing in the morning, I grab my coffee and sit at the computer and come to The Quilting Board. Feel like I'm visiting with friends. I stay as long as I want and come and go all day. BTW, I don't work so I have lots of free time to visit here!