Just do it..you will not hurt your quilt on the 7700...I love FMQ'ing on it...if you happen to make and error...only you will know...and if the tension is messed up you can very easily take the stitches out. I started free motion Quilting after only sewing for a few months. I knew nothing...this board has helped me along. So glad I do not have to pay someone to quilt my quilts for me. The fabic costs enough as it is...