Running Stitch Used to Decorate a Child's Vest

Today, I've been working on my latest project for the "Project Run and Play August Challenge".  This sewing challenge involves hand embroidery. I just made this cute little vest and I am using the running stitch to create rows of interlocking hearts.
It's a simple little stitch and is usually one of the first stitches learned by a beginner.   I may add another whipped stitch layer...I haven't quite decided.

In many ways, I just like the simplicity of the stitch...
Smiles,
Deborah