Tiny #stitches

Yesterday I started a new project: a textile #scrollBook, something like an #artBook as a #scroll.
The photo shows my work to find a collage composition. When I'm satisfied with that sample, I'll fix the pieces with wild #embroidery. Later I'll "write" with #stitches. More info: alt text!
@fibrearts @fiberarts @embroidery

Question for more experienced/knowledgeable hand sewers — what's a good stitch for attaching a stretchy patch to a stretchy garment? I assume I need something with some elasticity, that can be worked around the edge of the patch. Thanks!