Another method I saw on Jenny Doan's tutorial - she cut the back ground square the size needed then cut a rectangle of brown stem fabric - fold it wrong sides together - sew the stem onto the background square - slightly off center where you want the stem then fold the excess fabric over the top of the sewn seam and sew it down. I am sure I'm not explaining this well - if you watch the Missouri Star tutorial on the maple leaf quilt - she shows how she did it on that video.