When you quilt around the applique in your block, whether you machine or hand applique, it makes the design stand out. I free motion around it slowly and with small stitches. I use the same process when I quilt panels. It enhances the design and turns a wall hanging into something more special, since I usually use a panel when I do not have much time for piecing. A few borders and you are done. I do, however, spend more time on the quilting part of the project, and the results are wonderful. Here is a quick example.