I had a pair of old jeans I thought were pretty blah. I managed to not stitch the pockets closed, which was much more of a challenge than I originally expected. The winged heart and the outline of the skull I got from a stencil website someone posted on here a while ago. (Possibly the Stencilry?) The skull decoration was inspired from various sugar skull images.
I plan on adding more embroidery to this pair of jeans in the future as soon as I have the time and inspiration.