hello i am an avid quilter .)
is that the process of sewing two or more layers of fabric together to make a thicker padded material?
yep that is the processes of sewing and creating a quilt
a lot of quilter's use a sewing machine that passes the needle and thread through all the layers and then brings the needle back up
for heavy work I use a sewing machine but for fine or delicate work i like to hand sew
well straight running stitches are commonly used with these stitches being purely functional or decorative.
i do not know the names of stitches but i do use the very basic an utilitarian stitch
you can make a project thick or dense that causes one area to be raised so another stands out